What oil is needed for the 9" ford

[stagcar]

Hi All

What oil is needed for the 9" ford rear end?

I was going to chuck some ep90 in there is this the right stuff?


Also what oild sould i use in the LT77 box i think it should be a ATF of some discription?


Thanks
Derek

[bones]

has it got a lsd fitted ?? rich

[stagcar]

has it got a lsd fitted ?? rich

Hi mate

Its a none LSD version.

Have been reading that the LT77 like 0/40 fully synth engine oil

Is this the best bet? or sould i stick with the ATF?

sorry for the oil thred but there seems to be so many opinions on this.

Cheers
Derek

[kiwicar]

Hi
Transmissions are not my thing but from past postings, from what I followed over the years the lt77 should have good quality 20/50 in it, synthetic if you can afford it, no additives especially not moly slip as it kills the bearings, and defiantly not teflon as it burns out the syncro cones. Some put 50/50 ATF and 20/50 or straight 50/50 claiming it speeds up the change, but others say this also kills the syncro cones. personally I would put in good 20/50 and leave it at that. As for the 9" i would stick in straight 80 weight top quality transmission fluid if you are running less than about 550 bhp, if you are running more than that then 90 weight synthetic with teflon additive and change it every 3-4k or after about every 3rd race day. hopefully now someone will be on to argue with me
Best regards
Mike

[stagcar]

Hi
Transmissions are not my thing but from past postings, from what I followed over the years the lt77 should have good quality 20/50 in it, synthetic if you can afford it, no additives especially not moly slip as it kills the bearings, and defiantly not teflon as it burns out the syncro cones. Some put 50/50 ATF and 20/50 or straight 50/50 claiming it speeds up the change, but others say this also kills the syncro cones. personally I would put in good 20/50 and leave it at that. As for the 9" i would stick in straight 80 weight top quality transmission fluid if you are running less than about 550 bhp, if you are running more than that then 90 weight synthetic with teflon additive and change it every 3-4k or after about every 3rd race day. hopefully now someone will be on to argue with me
Best regards
Mike

Cheers Mike

Thats what its going to get then.

Whats the best way to get the oil out the rear end? i thought about pumping it out some how?

or am i missing the drain plug?

Cheers
Derek