Tools› Engine-Related

LISLE

DIESEL LEAK DETECTOR

$23.76

SKU: L011 75730

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The Lisle 75730 is a combustion leak detector fluid specifically formulated for diesel engines. It utilizes a distinct color-change reaction, turning from red to yellow when exposed to diesel combustion gases. This fluid is designed for accurate diagnostics and is compatible for use with the Lisle 75500 Combustion Leak Detector.

The product is a reliable chemical solution for identifying exhaust gas in the cooling system. It is used by automotive technicians and mechanics for diagnosing diesel engine issues, making it ideal for testing potential head gasket leaks and identifying cracks in cylinder heads or engine blocks.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandLISLE
Part NumberL011 75730

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy