jerflash

i got my 12 bolt used and it is really noisy on decel and so i put some lucus 80/90 non-syn gear oil in there but i have not driven it yet

it says that its saposed to quite things down some but want to know if anyone else has used it?

and it says that it does not need posi additive but sould i add it anyway?

thanks

joe

Scott@DrivelineSolutions

iTrader: (22)

You could always pack it with say dust.

It's all in the set up, changing the oil will not help.

wrencher

iTrader: (2)

Same thing here, as long as it doesnt sing louder & under a load.

peterock98

iTrader: (25)

Noisy on decel it could be a bad pinion bearing.

jerflash

i lifted the rear and put the car in a few forward gears thenpushed the clutch and turned it off so i could hear the full noice and it was there then i put it in rev and did the same and no noice what so ever

wrencher

iTrader: (2)

It is a coast gear noise, it is common in high numerical gear ratio's. Has it gotten louder or changed?
Your not gonna get stock rear silence out of it.

jerflash

i was not expecting 10bolt silence hahaha but i put the lucus in it and the noice got a lil better and when it heats up it gets quiter

wrencher

iTrader: (2)

Thats cool maybe I'll give that a try.....
If it helps keep noise down its gotta be a good thing!

jerflash

thats what i say

it did seem to quite it down some

i say go for it...takes only a few mins to change

rotwiler

iTrader: (1)

I had 3:42's put in and they do the same thing. Must be ok, cause I ran ET CC drags all summer last year and no problems. I added Royal Purple after the break in and it whined less, but is still there.

~JOSHUA

iTrader: (92)

You don't need additive with the Lucas. I used to run that oil-pretty neat oil. Just got a new diff and bought some Royal Purple this time.

jerflash

eaton says not to us syn with there dif

what kind of dif did you get?