[75driver]

The latest auto diesel was only getting up to 70 deg, so installed a specialist components housing and an 88 deg stat from motaquip, FTS104.88 / VTK169, in the top hose.
From cold, and monitoring temperature via obd, it initially reaches 98 deg, before dropping.
After initial cycle, it generally reaches 93-95 before dropping.
Also, if it was steady state at say 89, and I put some load on the engine (going up a hill), I’ve seen it go to 98, and expect it would go higher on a longer hill.
But, I have also noticed it dropping after 91 has been maintained for say 2 minutes.
This makes me think that the stat opens very slowly.
I know the slow speed fan kicks in at 100, but what is the consensus on running at these temperatures on a diesel?


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