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.

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

Help Track order

Account Cart

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

Help Track order

Account Cart

エンジンオイル品質テスター AS503 ガソリンおよびディーゼル車用エンジンオイルテスター 2.8インチスクリーン、ハイ精度検出プローブ、透過率＆オイル温度表示、さまざまな潤滑油規格に対応

エンジンオイル品質テスター AS503 ガソリンおよびディーゼル車用エンジンオイルテスター 2.8インチスクリーン、ハイ精度検出プローブ、透過率＆オイル温度表示、さまざまな潤滑油規格に対応

Product ID: 728308379

📏2.8-inch high-res LCD

🔬High-precision optical probe

🌡️Integrated oil temperature sensor

337.86 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

Description

🔧 Stay ahead of engine wear—test your oil like a pro, every time!

ADVANCED SENSING TECH - High-precision optoelectronic probe delivers reliable, lab-grade oil quality analysis.
CRYSTAL CLEAR DISPLAY - 2.8-inch backlit LCD ensures easy reading anytime, anywhere—day or night.
UNIVERSAL COMPATIBILITY - Accurately tests most gasoline & diesel engine oils with separate sampling modes for precision.
FLEXIBLE DURABLE PROBE - 800mm PTFE hose resists oil & oxidation, extending device lifespan and testing convenience.
ERGONOMIC HANDHELD DESIGN - Silicone grip and lightweight build make one-handed operation effortless for busy pros.

The AS503 Engine Oil Quality Tester by QPKING is a professional-grade handheld device designed for both gasoline and diesel vehicles. Featuring a 2.8-inch backlit LCD, a high-precision optical probe, and an integrated oil temperature sensor, it provides accurate, real-time assessments of oil condition across multiple lubrication standards. Its flexible 800mm PTFE probe ensures durability and ease of use, while the ergonomic silicone grip supports comfortable one-handed operation. Backed by a 3-year warranty and lifetime maintenance, this tester empowers millennial managers to maintain peak engine performance and avoid costly downtime.

Specifications

ASIN	B0CG99ZLX7
Amazon Bestseller	#626,485 in Automotive ( See Top 100 in Automotive ) #3,357 in Oil System Tools
Brand	QPKING
Customer Reviews	4.3 4.3 out of 5 stars (119)
Date First Available	August 22, 2023
Item Weight	372 g
Item model number	AS503 engine oil tester
Manufacturer	QPKING
Model	oil quality tester
Package Dimensions	25.5 x 14.2 x 5.89 cm; 372 g

Reviews

Y**A

انصح به وبشده

شكرا ً لكم

Invalid date

M**K

Zu empfehlen

Ist gut und einfach anzuwenden und funktioniert recht gut. Man kann damit seine Motoröl Qualität überprüfen

Invalid date

A**O

Ottimo

Ottimo prodotto consigliato

Invalid date

M**D

Good to know when your oil is needed to change

Works good, tried few different cars with old and new oil, shows about right. Definetely worth the the money

Invalid date

P**U

Funcionamiento.

Perfecto. Lo tengo desde hace 1 año y meses. Lo he probado en bastantes coches y funciona de maravilla. Cuidado hay que tomas las medidas siempre que el aceite este a menos de 35 grados Cº. De lo contrario lo que indique la pantalla no será lo correcto. POR LO QUE VALE LO AMORTIZAS EN 2 REVISIONES DE CAMBIO DE ACEITE.

Invalid date

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

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.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

337.86 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

Vikram D.

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

2 weeks ago

View all Trustpilot reviews