I am thinking of changing to this oil,but cant find it locally, what do you think about the Mobil 1 75x140 which is available at any parts store
I am wanting to try the Spectro, but like I said hard to find,I could not find a way to buy it from Spectro from there web page. I put Ams oil 20x50 in the motor and primary case,haven't changed the trans yet.