I looked at the webtech and found this: HP Gear Oil SAE 75W/85W (API-GL 4) (2.2ltr)

Now I found it the store this one: SX75W90

Which one's better. Plus should you add something, like that lucas oil stabalizer


I'm in Europe so 2 redline MT90 doesn't ring a bell for me. What kind of specs does it have ?

 

I use Redline MT90 and a full bottle of Lucas Heavy Duty Oil Stabilizer. The MT90's specs are 75W90 GL-4.

 

I use 3/4 bottle of Lucas, and mitsubishi fluid.

 

do you guys feel the shifting in a bit rougher with the lucas stabilizer?

 

i didnt notice it. maybe ill use all redline next time though and see if there is a difference.

 

Royal Purple all the way. It is great stuff.

 

Ok well i'm thinking of going with 1.5 Litres Redline MT-90, and 0.5 Litres Lucas Oil Stabilizer. I'm assuming MT-90/LOS will be safe for our tranny's, (not eat away at our gears/synchros)???

Also, anyone ever used Castrol Syntec Gear Oil???
Lastly a dumb questions but, if the oil says that is is API-GL5, does that mean it is good for GL4, GL3, and so on???