I've seen much debating on various opinions about which weight oil to use in the engine, mainly 5w20 vs. 5w30 (or 10w30). I was wondering if anyone else had any experience with different weight oils in the tranny and diff? 75w140 seems kinda heavy to use in the rear? I plan on adding either a girdle or the Boss (aluminum finned) cover for the rear and wondered if those would have an impact as to what weight oil could be used in the rear. I will be using Amsoil full synthetic in all 3 but wanted to know the best weight possible. Thanks to any that respond!
Best oil weight Engine/Tranny/Diff?
- Thread starter beef97
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Plenty of discussion on the topic here http://www.svtperformance.com/forums/2011-mustangs-354/796558-shall-i-change-oil-hold-off.html
I use 10/30 full synthetic in the summer and 5/30 full synthetic in the winter. When I say full synthetic I don't mean the stuff at wally world that reads full synthetic. Those oils aren't true synthetic oils. The exception is Mobil One extended life, Its a true synthetic.
Amsoil is good stuff.
I use 10/30 full synthetic in the summer and 5/30 full synthetic in the winter. When I say full synthetic I don't mean the stuff at wally world that reads full synthetic. Those oils aren't true synthetic oils. The exception is Mobil One extended life, Its a true synthetic.
Amsoil is good stuff.
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Mobil 1 Extended Performance 10w30 except for in winter months, then 5w30. Redline MTL or RP 75w90 gear oil for the tranny. RP 75w140 for the rear end. I'm sure Amsoil makes fluids to match all this. Just my choices in terms of weights and brands.
No but I'll be putting on a girdle and changing the rear end then. Probably going with the 80/140 Amsoil
There's a TSB out saying Ford will switch your tranny fluid to the dual clutch fluid. It's shit. Use something else like we have mentioned.
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