hey i have a 99 z71 seirra 5.3 and i run mobil1 5w30 oil and b&m trickshift synthetic trans fluid i was wonderin what fluids u guys use and what antifreeze i should use since im gonna flush it out
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hey i have a 99 z71 seirra 5.3 and i run mobil1 5w30 oil and b&m trickshift synthetic trans fluid i was wonderin what fluids u guys use and what antifreeze i should use since im gonna flush it out
I use M1 in the tranny, crankcase, and diffs. For the coolant I just use the good ole green Prestone. When I was installing my 160* hypertech powerstat I noticed sludge coming out of the drain hole and the thermo housing. Not so good if you ask me, so I did the switch and has been running just as good as ever. BTW, the oil I am using is Mobil1 Extended Use Synthetic 5w-30 for 15k with a 7.5k filter change with Mobil1 filter.
Chris
i run reg dex in the tranny. reg 80w 90 in the diff. i run royal purple in the engine. and i run the green stuff for coolant.