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Old 03-11-2022, 09:50 AM   #21
6spdhyperblue


 
Drives: 6th gen
Join Date: Aug 2013
Location: US
Posts: 3,678
Quote:
Originally Posted by BrandanK View Post
There is a thread in the Facebook 1LE Group. I cannot link it here as it is a private group.
The thread has about 50 replies, a few have used the Mobil 1 HP ATF with good success.
I thought dex6 and potentially hp lv was a thinner viscosity than dexiii. Obviously will need to do some digging and confirm. I would be extremely careful to not go thinner than oe.

I use rp synromesh and remember it being higher viscosity @ operating temp than oe when I last looked. I noticed little to no trade off in cold weather performance.

There are records of people using rp redline and amsoil back in the t56. Over 20 years of testing. I’m not sure I would risk being a geinea pig at this point.

I’ve only tried Mobil 1 dex 3 and rp. I did not like how notchy the M1 was and drained it
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‘22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28” dragpack - 11.68@122
‘16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold)
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