• More Powerful Detection RangeTransmittance Detection: Measure the oil transmittance (0-100%) through optical technology, visualize the degree of oil contamination ( warning, recommended replacement, OK qualified), to help users scientifically judge the oil change cycle.
• Dual-mode adaptationThe engine oil quality tester supports both gasoline engine and diesel engine oil type detection, covering the needs of mainstream car models. Switchable C/ F units, real-time display of oil temperature, to ensure that the engine is at a safe temperature (<60C) during testing.
• Precision test and sensitive probeThe testing hose is made of oil-resistant material, which prevents chemical oil corrosion and prolongs the service life. Length of 800mm, easy to go deep into the dipstick hole or oil sump sampling. Adopting high-precision sensors, stable signal transmission ensures no interference with the light transmission rate data.
• Easy Instant Read2.8 inches high resolution screen, instant display result, large display with backlight, easy and clear reading in sun or night. The LCD screen intuitively displays the light transmission rate, temperature, oil type and status prompts (e.g. warning symbols), without professional interpretation.
• Three Years WarrantyFor any quality problems. If AS503 has any defect, we will provide new replacement or solutions for our customers until satisfaction without delay, and provides lifetime technical support. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours.

• Package Dimensions : 10.12 x 5.47 x 2.28 inches; 12.8 ounces
• Date First Available : April 19, 2025
• Manufacturer : AUTOOL
• Country of Origin : China