{"product_id":"autool-as503-engine-oil-tester-digital-display-petrol-diesel","title":"AUTOOL AS503 Engine Oil Tester – Digital Display, Sound Alarm, Petrol \u0026 Diesel, CE FCC","description":"\u003c!-- ===== AUTOOL AS503 Engine Oil Tester — Shopify Product Description HTML ===== --\u003e\n\u003c!-- SEO Optimized | Paste into: Products \u003e Description \u003e HTML view (\u003c\u003e) --\u003e\n\n\u003cstyle\u003e\n  .as5-wrap{font-family:inherit;color:inherit;max-width:100%;line-height:1.6}\n  .as5-badge{display:inline-block;font-size:11px;font-weight:600;padding:3px 10px;border-radius:20px;margin:3px 4px 3px 0}\n  .as5-badge-blue{background:#DDEEFF;color:#1A5FAD}\n  .as5-badge-green{background:#E4F5D4;color:#2D6A10}\n  .as5-badge-amber{background:#FEF0D4;color:#875010}\n  .as5-badge-purple{background:#EEECFD;color:#4D3DB5}\n  .as5-badge-teal{background:#E0F7FA;color:#00695C}\n  .as5-badge-dark{background:#ECEFF1;color:#263238}\n  .as5-intro{background:#F4F8FF;border-left:3px solid #3A80D2;padding:12px 16px;border-radius:0 8px 8px 0;font-size:14px;color:#444;margin:16px 0 20px}\n  .as5-section-title{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:#888;margin:24px 0 10px}\n  .as5-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:20px}\n  .as5-grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:20px}\n  .as5-card{background:#F7F8FA;border-radius:10px;padding:14px}\n  .as5-card-icon{font-size:22px;margin-bottom:8px}\n  .as5-card-title{font-size:13px;font-weight:600;margin:0 0 4px;color:#1a1a1a}\n  .as5-card-desc{font-size:12px;color:#666;margin:0;line-height:1.5}\n  .as5-alarm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px}\n  .as5-alarm-card{border-radius:10px;padding:14px;text-align:center;border-top:4px solid}\n  .as5-alarm-card.good{background:#E8F5E9;border-color:#43A047}\n  .as5-alarm-card.warn{background:#FFF8E1;border-color:#F9A825}\n  .as5-alarm-card.bad{background:#FDECEA;border-color:#E53935}\n  .as5-alarm-icon{font-size:26px;margin-bottom:6px}\n  .as5-alarm-range{font-size:15px;font-weight:700;margin:0 0 4px}\n  .as5-alarm-range.good{color:#2D6A10}\n  .as5-alarm-range.warn{color:#875010}\n  .as5-alarm-range.bad{color:#B71C1C}\n  .as5-alarm-label{font-size:12px;color:#555;margin:0}\n  .as5-alarm-action{font-size:11px;font-weight:600;margin-top:6px}\n  .as5-alarm-action.good{color:#2D8B4E}\n  .as5-alarm-action.warn{color:#F9A825}\n  .as5-alarm-action.bad{color:#E53935}\n  .as5-steps{list-style:none;padding:0;margin:0 0 20px;counter-reset:step}\n  .as5-steps li{font-size:13px;color:#444;padding:10px 0 10px 44px;position:relative;border-bottom:1px solid #F0F0F0;counter-increment:step}\n  .as5-steps li:last-child{border-bottom:none}\n  .as5-steps li::before{content:counter(step);position:absolute;left:0;top:9px;width:28px;height:28px;background:#1A5FAD;color:#fff;border-radius:50%;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;line-height:28px;text-align:center}\n  .as5-spec-table{width:100%;border-collapse:collapse;font-size:14px;margin-bottom:20px}\n  .as5-spec-table tr{border-bottom:1px solid #EBEBEB}\n  .as5-spec-table tr:nth-child(even){background:#FAFAFA}\n  .as5-spec-table td{padding:9px 8px;vertical-align:top}\n  .as5-spec-table td:first-child{color:#666;font-weight:500;width:38%}\n  .as5-cert{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}\n  .as5-cert-pill{background:#E8F5E9;border-radius:8px;padding:6px 14px;font-size:12px;color:#2D6A10;font-weight:700;border:1px solid #A5D6A7}\n  .as5-info{background:#E8F5E9;border-left:3px solid #43A047;border-radius:0 8px 8px 0;padding:12px 16px;font-size:13px;color:#1B5E20;margin:16px 0}\n  .as5-warning{background:#FFF8E1;border-left:3px solid #F9A825;border-radius:0 8px 8px 0;padding:12px 16px;font-size:13px;color:#666;margin:16px 0}\n  .as5-checklist{list-style:none;padding:0;margin:0 0 20px}\n  .as5-checklist li{font-size:13px;color:#555;padding:6px 0 6px 24px;position:relative;border-bottom:1px solid #F0F0F0}\n  .as5-checklist li:last-child{border-bottom:none}\n  .as5-checklist li::before{content:\"✓\";position:absolute;left:0;color:#2D8B4E;font-weight:700}\n  .as5-note{background:#F7F8FA;border-radius:8px;padding:12px 16px;font-size:12px;color:#888;margin-top:16px;line-height:1.6}\n  @media(max-width:560px){.as5-alarm-grid{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\n\u003cdiv class=\"as5-wrap\" itemscope itemtype=\"https:\/\/schema.org\/Product\"\u003e\n\n  \u003c!-- SEO Meta --\u003e\n  \u003cmeta itemprop=\"name\" content=\"AUTOOL AS503 Engine Oil Tester – Digital Display, Petrol \u0026amp; Diesel, Sound Alarm, 800mm Probe, CE FCC Certified\"\u003e\n  \u003cmeta itemprop=\"description\" content=\"AUTOOL AS503 engine oil quality tester with 2.8-inch LED display, optical sensor, sound alarm, oil temperature measurement and 800mm PTFE probe. Suits petrol and diesel engines. CE FCC ROHS certified. NZ \u0026amp; AU stock.\"\u003e\n\n  \u003c!-- Badges --\u003e\n  \u003cdiv\u003e\n    \u003cspan class=\"as5-badge as5-badge-blue\"\u003ePetrol \u0026amp; Diesel\u003c\/span\u003e\n    \u003cspan class=\"as5-badge as5-badge-green\"\u003eOptical Precision Sensor\u003c\/span\u003e\n    \u003cspan class=\"as5-badge as5-badge-amber\"\u003eSound Alarm\u003c\/span\u003e\n    \u003cspan class=\"as5-badge as5-badge-purple\"\u003e2.8\" LED Display\u003c\/span\u003e\n    \u003cspan class=\"as5-badge as5-badge-teal\"\u003e800mm PTFE Probe\u003c\/span\u003e\n    \u003cspan class=\"as5-badge as5-badge-dark\"\u003eOil Temp Measurement\u003c\/span\u003e\n    \u003cspan class=\"as5-badge as5-badge-dark\"\u003eCE \/ FCC \/ ROHS\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Intro --\u003e\n  \u003cdiv class=\"as5-intro\"\u003e\n    The \u003cstrong\u003eAUTOOL AS503 Engine Oil Tester\u003c\/strong\u003e is a professional handheld oil quality testing tool designed for automotive workshops and DIY mechanics. Using an \u003cstrong\u003eoptical transparency measurement principle\u003c\/strong\u003e, it accurately assesses engine oil condition in both petrol and diesel engines — detecting metal particle contamination and impurities to determine whether an oil change is needed. Features a \u003cstrong\u003e2.8-inch LED display, built-in sound alarm, oil temperature sensor\u003c\/strong\u003e and an \u003cstrong\u003e800mm flexible PTFE probe\u003c\/strong\u003e for easy access to the oil dipstick tube.\n  \u003c\/div\u003e\n\n  \u003c!-- Why Use It --\u003e\n  \u003cdiv class=\"as5-info\"\u003e\n    🔍 \u003cstrong\u003eWhy Regular Oil Quality Testing Matters:\u003c\/strong\u003e Engine oil performs six critical functions — lubrication, cooling, rust prevention, cleaning, sealing and buffering. Degraded oil that goes undetected leads to accelerated engine wear, overheating and costly repairs. The AS503 gives you an accurate oil quality reading in seconds, helping prevent engine issues before they occur.\n  \u003c\/div\u003e\n\n  \u003c!-- Sound Alarm — 3-Level System --\u003e\n  \u003cp class=\"as5-section-title\"\u003e3-Level Sound Alarm System — Know Exactly When to Change\u003c\/p\u003e\n  \u003cdiv class=\"as5-alarm-grid\"\u003e\n    \u003cdiv class=\"as5-alarm-card good\"\u003e\n      \u003cdiv class=\"as5-alarm-icon\"\u003e✅\u003c\/div\u003e\n      \u003cp class=\"as5-alarm-range good\"\u003e100% – 60%\u003c\/p\u003e\n      \u003cp class=\"as5-alarm-label\"\u003eTransmittance\u003c\/p\u003e\n      \u003cp class=\"as5-alarm-action good\"\u003eOil is good — no change needed\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-alarm-card warn\"\u003e\n      \u003cdiv class=\"as5-alarm-icon\"\u003e⚠️\u003c\/div\u003e\n      \u003cp class=\"as5-alarm-range warn\"\u003e60% – 30%\u003c\/p\u003e\n      \u003cp class=\"as5-alarm-label\"\u003eTransmittance\u003c\/p\u003e\n      \u003cp class=\"as5-alarm-action warn\"\u003e! Warning — oil change recommended soon\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-alarm-card bad\"\u003e\n      \u003cdiv class=\"as5-alarm-icon\"\u003e🔔\u003c\/div\u003e\n      \u003cp class=\"as5-alarm-range bad\"\u003eBelow 30%\u003c\/p\u003e\n      \u003cp class=\"as5-alarm-label\"\u003eTransmittance\u003c\/p\u003e\n      \u003cp class=\"as5-alarm-action bad\"\u003eBEEP alarm — change oil immediately\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Key Features --\u003e\n  \u003cp class=\"as5-section-title\"\u003eKey Features\u003c\/p\u003e\n  \u003cdiv class=\"as5-grid-2\"\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e🔬\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003eHigh-Precision Optical Sensor\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eIntegrated optoelectronic sensor measures oil transparency using optical principles for accurate, repeatable results in any lighting condition\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e🖥️\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003e2.8\" Backlit LED Display\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eLarge backlit LCD screen with clear digital readout — easy to read in bright daylight or dim workshop conditions\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e🌡️\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003eBuilt-in Oil Temperature Sensor\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eMeasures and displays actual oil temperature to ensure readings are taken within the normal operating temperature range for accurate results\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e🔔\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003e3-Level Sound Alarm\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eVisual exclamation mark warning at 30–60% transmittance; audible beep alarm below 30% — clear alerts for every oil condition level\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e📏\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003e800mm Flexible PTFE Probe\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eExtra-long 800mm probe made of PTFE material — oil and oxidation resistant, highly flexible for easy insertion into the oil dipstick tube\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e🤚\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003eSilicone Grip Handheld Body\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eErgonomic silicone-lined handle for secure single-handed grip — lightweight and comfortable for extended use\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e⛽\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003ePetrol \u0026amp; Diesel Compatible\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eSeparate measurement modes for petrol and diesel engines — select engine type before testing for more precise oil quality assessment\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"as5-card\"\u003e\n      \u003cdiv class=\"as5-card-icon\"\u003e🧪\u003c\/div\u003e\n      \u003cp class=\"as5-card-title\"\u003eTest with Used Oil Directly\u003c\/p\u003e\n      \u003cp class=\"as5-card-desc\"\u003eNo sample preparation needed — simply insert the probe into the engine oil and test directly for fast on-the-spot results\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- How to Use --\u003e\n  \u003cp class=\"as5-section-title\"\u003eHow to Use — 6 Simple Steps\u003c\/p\u003e\n  \u003col class=\"as5-steps\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWipe the test probe clean\u003c\/strong\u003e before starting\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRemove the oil dipstick\u003c\/strong\u003e from the engine\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePress the ↶ button\u003c\/strong\u003e to select your vehicle's engine type — petrol or diesel\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSubmerge the testing probe\u003c\/strong\u003e into the engine oil via the dipstick tube\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePress the ► button\u003c\/strong\u003e to start the test\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRead the results\u003c\/strong\u003e on the display — transmittance percentage and oil temperature shown instantly\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003c!-- Certifications --\u003e\n  \u003cp class=\"as5-section-title\"\u003eCertifications\u003c\/p\u003e\n  \u003cdiv class=\"as5-cert\"\u003e\n    \u003cspan class=\"as5-cert-pill\"\u003e✅ CE Certified\u003c\/span\u003e\n    \u003cspan class=\"as5-cert-pill\"\u003e✅ FCC Certified\u003c\/span\u003e\n    \u003cspan class=\"as5-cert-pill\"\u003e✅ ROHS Compliant\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Technical Specifications --\u003e\n  \u003cp class=\"as5-section-title\"\u003eTechnical Specifications\u003c\/p\u003e\n  \u003ctable class=\"as5-spec-table\"\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eAUTOOL AS503 Engine Oil Tester\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e2.8-inch backlit LED \/ LCD screen\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMeasurement Method\u003c\/td\u003e\n\u003ctd\u003eOptical transparency (optoelectronic sensor)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCompatible Engine Types\u003c\/td\u003e\n\u003ctd\u003ePetrol and diesel engines\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProbe Length\u003c\/td\u003e\n\u003ctd\u003e800mm flexible probe\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProbe Material\u003c\/td\u003e\n\u003ctd\u003ePTFE — oil and oxidation resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHandle Material\u003c\/td\u003e\n\u003ctd\u003eSilicone substrate grip\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTemperature Sensor\u003c\/td\u003e\n\u003ctd\u003eBuilt-in — measures actual oil temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAlarm Levels\u003c\/td\u003e\n\u003ctd\u003e3-level — OK \/ Warning (!) \/ Audible beep alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAlarm Thresholds\u003c\/td\u003e\n\u003ctd\u003e100–60% = OK | 60–30% = Warning | Below 30% = Beep alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, FCC, ROHS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- Note --\u003e\n  \u003cdiv class=\"as5-warning\"\u003e\n    📝 \u003cstrong\u003eNote:\u003c\/strong\u003e The AS503 measures oil transparency to indicate the presence of impurities and contaminants — including metal particles from mechanical friction. It is designed for use with existing engine oil directly from the dipstick tube. No oil sample extraction is required.\n  \u003c\/div\u003e\n\n  \u003c!-- Before You Buy --\u003e\n  \u003cp class=\"as5-section-title\"\u003eKey Benefits at a Glance\u003c\/p\u003e\n  \u003cul class=\"as5-checklist\"\u003e\n    \u003cli\u003eMeasures engine oil transparency to detect impurities, contaminants and metal wear particles\u003c\/li\u003e\n    \u003cli\u003eSeparate petrol and diesel engine modes for more accurate results\u003c\/li\u003e\n    \u003cli\u003e3-level alarm system — visual warning and audible beep for clear oil change guidance\u003c\/li\u003e\n    \u003cli\u003eBuilt-in oil temperature sensor ensures readings are taken at correct operating temperature\u003c\/li\u003e\n    \u003cli\u003e800mm flexible PTFE probe — oil resistant, long-lasting and easy to insert\u003c\/li\u003e\n    \u003cli\u003eErgonomic silicone grip — comfortable single-handed operation\u003c\/li\u003e\n    \u003cli\u003eCE, FCC and ROHS certified — independently verified quality and safety\u003c\/li\u003e\n    \u003cli\u003eTest directly with used engine oil — no sample preparation required\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003c!-- Disclaimer --\u003e\n  \u003cdiv class=\"as5-note\"\u003e\n    \u003cstrong\u003eNote:\u003c\/strong\u003e The AUTOOL AS503 measures oil transparency as an indicator of oil quality. Results should be used as a guide alongside regular vehicle maintenance schedules. Always consult your vehicle's manufacturer recommendations for oil change intervals.\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c!-- ===== END OF PRODUCT DESCRIPTION ===== --\u003e","brand":"Autool","offers":[{"title":"Default Title","offer_id":54104299405507,"sku":"autas503","price":99.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0599\/3303\/2643\/files\/e0358359-7557-4500-a69a-077ad11ea559.png?v=1792571408","url":"https:\/\/fairtools.co.nz\/products\/autool-as503-engine-oil-tester-digital-display-petrol-diesel","provider":"FairTools","version":"1.0","type":"link"}