--- product_id: 670866587 title: "Engine Oil Tester for Petrol & Diesel - 2.8\" LCD with Backlight, High Precision Optical Probe, Oil Temperature Display in °C/F, Flexible 800mm PTFE Hose - AS503" brand: "qpking" price: "3545830₫" currency: VND in_stock: true reviews_count: 5 category: "Qpking" url: https://www.desertcart.vn/products/670866587-engine-oil-tester-for-petrol-and-diesel-2-8-lcd store_origin: VN region: Vietnam --- # High-precision optical probe 2.8-inch HD screen Real-time oil temperature display Engine Oil Tester for Petrol & Diesel - 2.8" LCD with Backlight, High Precision Optical Probe, Oil Temperature Display in °C/F, Flexible 800mm PTFE Hose - AS503 **Brand:** qpking **Price:** 3545830₫ **Availability:** ✅ In Stock ## Summary > 🔧 Diagnose Like a Pro, Drive with Confidence! ## Quick Answers - **What is this?** Engine Oil Tester for Petrol & Diesel - 2.8" LCD with Backlight, High Precision Optical Probe, Oil Temperature Display in °C/F, Flexible 800mm PTFE Hose - AS503 by qpking - **How much does it cost?** 3545830₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/670866587-engine-oil-tester-for-petrol-and-diesel-2-8-lcd) ## Best For - qpking enthusiasts ## Why This Product - Trusted qpking brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **See More, Know More:** Large 2.8-inch screen ensures clear, easy-to-read results, minimizing guesswork during diagnostics. - • **Confidence Backed by Support:** 24-month warranty plus 24/7 customer service means you’re never alone in maintaining peak engine performance. - • **Precision at Your Fingertips:** High-precision optoelectronic sensor delivers ultra-accurate oil quality readings for both petrol and diesel engines. - • **Stay Ahead with Real-Time Data:** Built-in temperature sensor displays transmission oil temperature, giving you instant insight into engine health. - • **Flexible Testing, Maximum Comfort:** 800mm PTFE hose probe offers exceptional flexibility and corrosion resistance for effortless, reliable sampling. ## Overview The AS503 Engine Oil Quality Tester is a handheld, high-precision device designed for petrol and diesel vehicles. Featuring a 2.8-inch display and a flexible, corrosion-resistant PTFE probe, it provides accurate oil quality and temperature readings. Compatible with multiple lubricating oil standards, it ensures precise diagnostics with user-friendly operation and reliable customer support. ## Description Buy Engine Oil Quality Tester AS503 Engine Oil Tester for Petrol and Diesel Vehicles with 2.8-Inch Screen, High-Precision Detection Probe, Transmission Oil Temperature Display at desertcart UK. Free delivery on eligible orders. Review: شكرا ً لكم Review: Ist gut und einfach anzuwenden und funktioniert recht gut. Man kann damit seine Motoröl Qualität überprüfen ## Features - Compatible with various lubricating oil standards: suitable for most lubricating oils available on the market for petrol and diesel engines. Separate sampling and measurements for petrol and diesel engines allow a more accurate assessment of the condition of the lubricating oil. - Oil temperature display: built-in temperature sensor for convenient assessment of the operating status of the engine. - High-precision optical probe: integrated with a high-precision optoelectronic sensor that ensures more accurate measurement results. - [FLEXIBLE HOSE PROBE FOR COMFORTABLE TESTS]: The 800mm long probe design provides a more flexible and convenient way to perform tests. The hose is made of PTFE material, which is very oil and oxidation resistant and has exceptional corrosion resistance, effectively extending the life of the product. - [USER-FRIENDLY HANDHELD DESIGN]: The handheld part of the case is lined with silicone substrate and provides excellent grip and lightweight design for easy one-handed operation. - [WARRANTY]: We provide 24 months warranty and 7x24 hours friendly customer service to ensure your shopping experience. If you have any problems, please feel free to contact us, we will offer you a solution as soon as possible. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CG99ZLX7 | | Best Sellers Rank | 122,672 in Automotive ( See Top 100 in Automotive ) 23 in Oil Pressure Testers | | Brand | QPKING | | Customer Reviews | 4.3 4.3 out of 5 stars (109) | | Date First Available | 17 May 2024 | | Item Weight | 372 g | | Item model number | AS503 engine oil tester | | Manufacturer | QPKING | | Manufacturer part number | AS503 Motoröl-Qualitätsprüfgerät | | Model | AS503 Motoröl-Qualitätsprüfgerät | | Package Dimensions | 25.5 x 14.2 x 5.89 cm; 372 g | ## Images ![Engine Oil Tester for Petrol & Diesel - 2.8" LCD with Backlight, High Precision Optical Probe, Oil Temperature Display in °C/F, Flexible 800mm PTFE Hose - AS503 - Image 1](https://m.media-amazon.com/images/I/61J2FHUeZsL.jpg) ## Questions & Answers **Q: Is this easy to use for someone who's not a mechanic?** A: Absolutely! It's designed for everyone.Just wipe the probe, select your engine type(gasoline or diesel), dip it in the oil, and press the button.You'll get a clear "OK" or "Replace" result on the large screen in seconds—no technical knowledge needed. **Q: How accurate is it compared to just looking at the oil color?** A: More accurate than the human eye, our optical sensor analyzes microscopic oil contaminants to give definitive percentage and temperature readings—eliminating maintenance guesswork. **Q: Does it work on both old and new cars, and for diesel trucks?** A: Yes! It is universally compatible with the majority of gasoline and diesel engine oils on the market. Separate testing modes ensure accurate assessment for each engine type, whether it's your daily car, SUV, or diesel pickup truck. **Q: Why should I buy this instead of just changing my oil regularly?** A: It helps you change oil smartly,not just regularly.It prevents you from changing oil too early (saving money)or too late (preventing engine damage).It's the fastest way to know if your oil is still good,optimizing both engine health and your wallet. **Q: How do I know this is a reliable brand?** A: The AS503 is built with professional-grade components like a PTFE-coated probe and a robust optical sensor. It comes with a clear manual and is trusted by DIYers and professionals for its simple, dependable readings. Your satisfaction is guaranteed. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by Y***A on 13 July 2025* شكرا ً لكم ### ⭐⭐⭐⭐⭐ Review *by M***K on 28 October 2025* Ist gut und einfach anzuwenden und funktioniert recht gut. Man kann damit seine Motoröl Qualität überprüfen ### ⭐⭐⭐⭐⭐ Review *by M***D on 24 February 2026* Works good, tried few different cars with old and new oil, shows about right. Definetely worth the the money ## Frequently Bought Together - Engine Oil Quality Tester AS503 Engine Oil Tester for Gasoline Diesel Vehicles With 2.8"Screen High-Precision Detection Probe,Transmittance&Oil Temp.Display,Compatible With Various Lubricant Standards - TYRAREX Automotive Transmission Fluid Tester Oil Analyzer Detector with Temperature Sensor, Gasoline & Diesel Gearbox Oil Diagnostic Tool with 31.5in Hose 2.8in Backlight Display (T20) - Brake Fluid Tester, High Precision Car Brake Fluid Detector, Hydraulic Fluid/Liquid/Oil Moisture Analyzer with LCD Screen Audible Alarm DOT3 DOT4 DOT5.1 Tester,Automotive Replacement Level Sensors --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/670866587-engine-oil-tester-for-petrol-and-diesel-2-8-lcd](https://www.desertcart.vn/products/670866587-engine-oil-tester-for-petrol-and-diesel-2-8-lcd) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-24*