r/Diesel • u/jakes_photo • 1d ago

Question

I just bought a 2002 f350 7.3 automatic. Any good recommendations on coolant? High miles 340k.. I live up in Montana so high elevation and cold winters. Any other good to do recommendations are good too. I’m new to the diesel world. I’m going to run t6 5w40 rotella oil, but that’s as far as I’ve gotten. Planning on doing the fuel filter, oil filter, coolant flush, trans oil, new batteries, and some other odds and ends

Appreciate it
-jake

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u/Aleutian_Solution 6.2 Detroit, 6.6 LML 1d ago

Dexcool for diesels. Or look in the service manual and use that.

1

u/herstal54s 1d ago

Dex is GM isnt it?

1

u/Aleutian_Solution 6.2 Detroit, 6.6 LML 1d ago

You can use it in some fords. If your coolant is or was originally orange you’ll be fine to use it.