Axle Lub

Jul 03, 2004 9 Replies

What is the recomended lub for the rear end of a '91 GT? How do I know if I have Traction-Lok?


Weight? any paticular type for trac-loc as opposed to with out trac-lok. I have to do mine this weekend its developed a leak.

96 gts

Dave

I forgot which weight I used... 80w or 90w I believe. Call an autoparts store & ask 'em... like O'Reilly or Autozone. They'll look it up.

-Mike

Don't go the Ford store, they will charge you a fortune for the stuff they think needs to go in it. Also add the friction modifier.

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Went to Advance auto parts and got 2 containers of Castrol 75-80w synthetic gear lubricant and some crc posi-tracloc additive. Dave

Unfortunately, Castrol does not make any synthetic oil....

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You be right, after going ut to the car and looking at the containers its Valvoline synpower synthetic.

Dave

when >using full synthetic, you are doing the opposite ?

actually friction modifiers decrease friction.

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OffroadX I was looking at RedLine's site about to buy some of their limited slip differential(LSD) friction modifier in the hopes of making my LSD actually WORK worth a damn and noticed they have 75W90 and 75W90-NS oils. The regular 75W90 already has the LSD friction modifiers, the NS doesn't. The NS type says "recommended for manual transmissions and non-limited-slip transaxles that recommend 90 WT oils. Can be used in racing limited-slip units to increase lockup and reduce wheel spin" which I take to read that the friction modifiers actually make the LSD less effective. Indeed, I just got off the phone with a tech at RedLine. Told him I was running Mobil 1 (which includes the modifier) w/ my LSD and I wasn't satisfied with the performance of the LSD and I was about to buy some of Redline's LSD friction modifier additive thinking it would make the LSD operate better until I read what they said about their NS-type oil. He agreed and said I was going in the wrong direction. Adding the modifier only makes things more slippery and the clutches would be less likely to grab and kick the LSD into action. His advice was to go with an additive-free oil like their NS-type and add just enough of the additive to get rid of any chatter in turns.

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