Is this easy to use for someone who's not a mechanic?

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.

How accurate is it compared to just looking at the oil color?

More accurate than the human eye, our optical sensor analyzes microscopic oil contaminants to give definitive percentage and temperature readings—eliminating maintenance guesswork.

Does it work on both old and new cars, and for diesel trucks?

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.

Why should I buy this instead of just changing my oil regularly?

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.

How do I know this is a reliable brand?

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.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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AS503 Engine Oil Quality Tester for Gasoline and Diesel Engines | Optical transmittance screening with oil temperature display, 31.5-inch PTFE probe and 2.8-inch backlit LCD

Product ID: 585925504

🔄Dual-mode for Gasoline & Diesel oils

🧪31.5-inch flexible, oil-resistant PTFE probe

⏱️2-second ultra-fast oil transmittance reading

267.95 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

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Description

🔧 Know Your Oil, Own the Road — Precision Testing at Your Fingertips!

REACH EVERY DIPSTICK - 31.5-inch flexible PTFE probe slides effortlessly into tight, angled dipstick tubes—durable and built to last.
CLEAR ANYTIME READINGS - Large 2.8-inch backlit LCD with ergonomic grip delivers easy-to-understand OK/Replace indicators, even in low light.
INSTANT OIL HEALTH CHECK - Get precise 0-100% transmittance results in just 2 seconds—never guess when to change your oil again.
TEMPERATURE VERIFIED TESTING - Built-in °C/°F gauge confirms your engine’s optimal temperature before testing for flawless readings.
UNIVERSAL FUEL COMPATIBILITY - Optimized algorithms for both gasoline and diesel engines ensure spot-on accuracy for any vehicle type.

The QPKING AS503 Engine Oil Tester is a cutting-edge optical transmittance analyzer designed for both gasoline and diesel engines. Featuring a rapid 2-second measurement, a 31.5-inch flexible PTFE probe for hard-to-reach dipsticks, and a built-in temperature gauge, it delivers accurate, easy-to-read oil health diagnostics. Its backlit LCD and ergonomic design make it perfect for DIY enthusiasts and professionals alike, backed by a 3-year warranty and lifetime maintenance support.

Specifications

ASIN	B0CG99ZLX7
Brand	QPKING
Customer Reviews	4.3 4.3 out of 5 stars (126)
Date First Available	August 22, 2023
Item Weight	13.1 ounces
Item model number	AS503 engine oil tester
Manufacturer	QPKING
Manufacturer Part Number	AS503 Motoröl-Qualitätsprüfgerät
Model	oil quality tester
Package Dimensions	10.04 x 5.59 x 2.32 inches

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Perfect platform for hard-to-find items. Delivery was prompt.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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267.95 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

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