What kind of Red Line gear oil should I get?
I want to do change the oil in my tranny to Red Line, since so many people rave about it, but Red Line has three types of 75W-90 oil. So I don't know which one to get. Can anyone tell me what's the correct oil? I've C&P Red Line's descriptions.
75W-90
Our most popular gear oil, this is the preferred product in nearly all car and light truck differentials, both conventional and limited-slip. 75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions and transaxles; however, other Red Line lubricants have better frictional properties for rapid synchronization. Exceeds API GL-5.
75W-90NS
This GL-5-type geal oil doesn't contain the friction modifiers for limited-slip hypoid differentials. This makes the transmission synchronizers come to equal speeds more quickly, allowing faster shifting and much easier low-temperature shifting. Can also be used in racing limited-slip differentials where weak spring design causes too much wheel spin.
MT-90
Popular in Nissan, Toyota and Mazda manual transmissions and transaxles as well as other selected applications, this is a 75W90 GL-4 Gear Oil that’s slightly heavier than MTL. Provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.
http://www.redlineoil.com/products_gearlubricants.asp
EDIT: Forgot to include the third type.
75W-90
Our most popular gear oil, this is the preferred product in nearly all car and light truck differentials, both conventional and limited-slip. 75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions and transaxles; however, other Red Line lubricants have better frictional properties for rapid synchronization. Exceeds API GL-5.
75W-90NS
This GL-5-type geal oil doesn't contain the friction modifiers for limited-slip hypoid differentials. This makes the transmission synchronizers come to equal speeds more quickly, allowing faster shifting and much easier low-temperature shifting. Can also be used in racing limited-slip differentials where weak spring design causes too much wheel spin.
MT-90
Popular in Nissan, Toyota and Mazda manual transmissions and transaxles as well as other selected applications, this is a 75W90 GL-4 Gear Oil that’s slightly heavier than MTL. Provides excellent protection of gears and synchronizers and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting.
http://www.redlineoil.com/products_gearlubricants.asp
EDIT: Forgot to include the third type.
Originally Posted by paul34
hey brakefade... let us (or at least me, heh) know how you like the change after you do it... I've been considering it myself 
Oh, and I hope all at SS is well, haven't let myself go around there in a while

Oh, and I hope all at SS is well, haven't let myself go around there in a while
Originally Posted by etsnet
Anyone have a DIY for the tC for this?
MT means Manual Transmission. You'd get ATF. And they do have ATF too.
Check it out;
http://www.redlineoil.com/products_g...p?categoryID=8
I don't know how much of a difference it'll make though.
Check it out;
http://www.redlineoil.com/products_g...p?categoryID=8
I don't know how much of a difference it'll make though.








