redlineracing

This is the MTF that you want.I've run it in my 03S for years.

\rlr
Carolina

SpitfireS

You did get me to second guess myself for a second, but I think I've got it right

30 is 30% of 90, true.
But... 30 is also 66% less than 90 - when you take 90 as reference.
Key word is less.
Just like 90 is 200% more than 30 - whan you take 30 as reference.

So if someone would think a 5W-30 is 1/3rd of 75W-90 they are still wrong.
The 5W-30 is only 35% less than the 75W-90 Orrrrr.. about 2/3rd of it.

nightime

i saw that you switch your diff to 75W-110 next time try running the 75w-140

Driv300mph

What about for colder weather going into winter? I'm sure 140 is too thick then, right?