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.

As503 Petrol Diesel Engine Oil Tester With 80cm Ptfe Probe

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

¥17577

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Description

⏱️ Test smarter, drive safer—never miss a beat under the hood!

DURABLE FLEXIBLE PROBE - 800mm PTFE hose resists oil, oxidation, and corrosion for long-lasting reliability.
DUAL ENGINE COMPATIBILITY - Tailored testing modes for both petrol and diesel engines for pinpoint accuracy.
ERGONOMIC HANDHELD DESIGN - Silicone grip and lightweight build for effortless one-handed operation on the go.
INSTANT OIL QUALITY INSIGHT - Get accurate oil condition results in just 2 seconds—no more guessing.
REAL TIME TEMPERATURE DISPLAY - Built-in sensor shows oil temp in °C/°F to monitor engine health instantly.

The AS503 Digital Engine Oil Quality Tester is a portable, professional-grade device designed for rapid and precise assessment of lubricating oil in petrol and diesel engines. Featuring a 2.8-inch high-resolution LCD, a high-precision optical probe, and an 80cm corrosion-resistant PTFE hose, it delivers reliable oil quality and temperature readings within 2 seconds. Its ergonomic handheld design and dual engine compatibility make it an essential tool for proactive engine maintenance and performance optimization.

Specifications

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

Reviews

Y**A

انصح به وبشده

شكرا ً لكم

13.07.2025

M**K

Zu empfehlen

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

28.10.2025

A**O

Ottimo

Ottimo prodotto consigliato

24.05.2026

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

24.02.2026

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.

2.07.2026

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

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Reema J.

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

1 month 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.