What fluid SHOULD i run in a stock 8.8?

[Bosko5.0]

Mobil 1 syn here too I have also heard that some synthetics come with friction modifer in it.

 

[tderrick]

Doesn't switching to synthetic late in life of the part start leaks??

 

[Bosko5.0]

Yes it does but since people replace the four seals on the stock rear end you won't get leaks

 

[fiveoho]

thanks for the info / input guys.

as always, much appreciated

 

[GTA_V6_Mustang]

my bad i just checked the bottle today. I use 75-140 full syn. and no issues or leaks.

 

[reddy351]

Doesn't switching to synthetic late in life of the part start leaks??

I'm not sure about that. What I've heard is that adding synthetic ENGINE OIL to an engine that has never had it actually breaks-up deposits. (even around the seals) Since it flows "thinner" and removes built-up sludge, it causes leaks. Of course, I'm sure that the companies that were invested in "dino" oil wanted everyone to know that.

I'm not sure it would do that in a rear-end.