Laidong 4L22D Engine Thermostat

my dozer has the 4l22-ta it runs around

100 degress too i thought that was to low but bob from nortrac says thats what it suppose to run

Hate to disagree with “Bob from Nortrac”, apparently he doesn't understand thermal efficiency and the dangers of running an engine cold.

I installed a 180° thermostat in my dozer with the TY395 engine and I could tell the difference in sound and performance. My fuel consumption went down, and my engine oil life improved. I currently have 260+ hours on the oil and it's still perfect according to the analysis.

My background knowledge is from being a licensed diesel engineer for many years.

What is a 100F thermostat anyway, another word for gasket?

MisterPat,

Without seeing your thermostat, it's impossible to guess. I would take it to NAPA or any good auto supply house and have them physically match it up.

143 degrees f is the coolest thermostat I ever heard of was for a gas burning pleasurecraft engine I thing they put the operating temp that low was to save the raw water exhaust manifolds and elbows.

That is correct David. In old raw water cooled marine engines. There was something magic that happened to salt water and cast iron when it reached 150°F. The cast iron turned black and began to disappear.