3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
i am going to change my differential oil and was wondering what brand of oil to use. not sure what works best in bmw. also my owners handbook says to use a 90 weight oil. is that a straight 90 weight oil or would it be 75w-90 or 80w-90? any info. would be greatly appreciated. thanks in advance.
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that funny because I was just reading about diff lubriquant jsut today
On LSD differential, Synthetic Gear Oil such as Motul Gear 300 75w90 will not allow the LSD to engage properly. You need to add a Limited Slip Additive to your lubriquant. Thats is where I get confused. Motul dont supplie that additive in america. There is one from Kazzz (costs a bundle and impossible to get). Finally, there is one very cheap and easy to buy.... GM Goodwrench Limited Slip Axle Lubriquant Additive.
Does anybody have tried any of these additive on there LSD?
Does anybody have experienced traction problem when not using these additive?
Are the additive for "Clutch type LSD" or "Viscous Coupling LSD"?
On a 325is, the LSD is a "Clutch type"... right?
I'm back from my BMW dealer, the guy told that they used to add Mopar (Chrysler) Limited Slip Additive Friction Modifier in the diffential lubriquant they where changing in the garage.
So I went to a Chrylser dealer, sold me a bottle of 4 FL. OZ for 12$ canadian. On the bottle, it says that it reduces the noise from the differential when equipped with an LSD. According to the dealer, it also helps the LSD to engage on slippery pavement. On the bottle, the recommanded proportion is 2% to 5% by gear lubriquant weight.
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