gear oil weight?

[MoonlightGT]

what do you guys use? the factory recommeds 80W-90 i think right? i wanna change mine again with full synthetic but i can only find quaker state 75W-140 full syn at the local parts store. the other synthetics that they have in 80W 90 are store brand names that i dont want. will the quaker state 75W 140 be ok or do i have to go somewhere else and find an 80W-90??

 

[MoonlightGT]

ummm anyone?

 

[Matt94GT]

I know lots of people use ATF. Almost everyone I talked to says "dont use gear oil its crap for our trannys, use ATF!!!!"

To awnser your question its syntetic 75W-90. Royal Purple is supposed to be great and you dont need to add friction modifier, some you do, it should say on the bottle.

I did a search on the ATF vs Gear oil and found this:
http://forums.stangnet.com/showthread.php?t=558060&highlight=gear+oil

32 to 4 say use ATF.

 

[MoonlightGT]

sorry matt, i guess i didnt specify that the gear oil was for the rear end, not the tranny. i put lucas in my rear end and ive heard too many bad things about lucas so i wanna change it for a different oil. i have the friction modifier already , just need oil.

 

[Matt94GT]

lol damn I was tired and must not of been thinking clearly I jumped back and forth between trans and rear end fluid...wow. I knew what you meant I just wasnt thinking clearly.

I did give you the awnser to confirm you want To awnser your question its syntetic 75W-90. Most people run SAE 80 or 90....90 if its a bit noisy or you really giver in the stang all over.

 

[MoonlightGT]

ok thanks

 

[Pennywise2]

75W90 gear oil is what you should use.

 

[scarface]

^ thats what I use.

 

[97blackgt]

Alldata and Ford recommend 75-140 but i used 75-90...

 

[Pennywise2]

75W90 gear oil is what I highly recommend useing.

 

[riored96gt]

Don't forget the Ford friction modifier or the Trac-loc won't!

Be prepared...it stinks!!!

 

[97vertstang]

75w-90 royal purple and torco friction modifier