going synthetic when non synthetic call for ?
07-05-2010, 07:07 PM
#1
going synthetic when non synthetic call for ? My 1997 camaro z28 m6 manual say using 80w90 with gm additive, can I run synthetic with gm additive , reason I want run synthetic cause it last longer, any one here running mobil 1 75w90 with gm additive, does it whining ? I heard mobil 1 gear oil make gear whining.
07-06-2010, 11:39 AM
#2
If it says to use an additive then you must have an Auburn posi which is a clutch type posi, auburn recommends that you do not use sythetic, they say you must use non syn. When the rear end shop installed my Auburn and used a 75-140 and additive the diff would squall because it wasn't releasing enough, they had to go back with regular 80-90 and additive to fix the problem.
Last edited by 00pooterSS; 07-06-2010 at 11:47 AM.
07-06-2010, 04:18 PM
#6
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We run the synthetic oil only when the circumstances or the enviorment dictates the need for synthetic. Street car not creating an abnormal amount of heat will not need a synthetic oil. As stated above, a lot of aftermarket positraction manufactures are steering away from the synthetic as they are finding it has been problematic with the clutches and clutch surfaces.
Jeff
Jeff
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07-06-2010, 10:08 PM
#11
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I find it odd that yours calls for 80w90 + additive while mine calls for synthetic 75w-90 with additive. I do not have the Auburn posi so idk why it calls for that. Did all the later ls1 cars call for synthetic + additive?
07-09-2010, 11:16 AM
#17
. since with gasket it made change out easy no more scrubing. btw dont u love that smell since u change out so much just wonder the smell still bother u ?
07-09-2010, 12:39 PM
#18
This is first time I change with gasket, I use to do it with black sillicon, since im require to use dino gear oil I have to change out every 7.5k to 8k ( every year ), with silicon, i HATE scrub that stuff off . since with gasket it made change out easy no more scrubing. btw dont u love that smell since u change out so much just wonder the smell still bother u ?
. since with gasket it made change out easy no more scrubing. btw dont u love that smell since u change out so much just wonder the smell still bother u ?Did you ever determine if you even had an auburn so that you would know if you had to use dino rather than synthetic?
07-09-2010, 02:13 PM
#19
Oh no dude the hate of the smell never goes away, and really you could put more than 7-8k on the dino oil, but you are definately not hurting it. But one thing that could help you is if you get a girdle, like a MAC or a Jegs girdle (differential cover) they have drain and fill plugs in them so you can just use the plugs instead of pulling it off.
Did you ever determine if you even had an auburn so that you would know if you had to use dino rather than synthetic?
Did you ever determine if you even had an auburn so that you would know if you had to use dino rather than synthetic?
and working on rear diff. Here what I have so far today2 quart of valvoline 80w90 dino
1 bottle of ford friction mod ( got few more bottle from my old mustang )
1 fel-pro gasket
blue tower and brake cleaner
When I pull the cover off, I will post pix here.
07-09-2010, 05:10 PM
#20
Im turn my phone off on saturday night and working on rear diff. Here what I have so far today
2 quart of valvoline 80w90 dino
1 bottle of ford friction mod ( got few more bottle from my old mustang )
1 fel-pro gasket
blue tower and brake cleaner
When I pull the cover off, I will post pix here.
and working on rear diff. Here what I have so far today2 quart of valvoline 80w90 dino
1 bottle of ford friction mod ( got few more bottle from my old mustang )
1 fel-pro gasket
blue tower and brake cleaner
When I pull the cover off, I will post pix here.