A friend has had this truck since 15k of miles. The trunk ran on Mobil 1 5w30 since he got it. He did around 5-7k oil changes and filter. The truck started to use oil around 80k, and he switched to Amsoil around that time as well. (It was using Mobil 1 oil as well). He would hope Amsoil would help. The problem got worse. By 100k after two more oil changes, the problem did get worse. He didnt' ask me but I am not sure if it was safe or not. He put in Slick50 as a quart of replacement oil and it fixed his oil disappearing problem for the rest of that oil change. He did another oil change and it hasn't come back till now. It is using a quart again. So he put in Amsoil 1 quart and the next day his light came on again. He checked and it was a little low, so he put Slick50 half a quart is all he could put in right now and we will see what happens.
Anyways, long story short, is it safe to be mixing the slick50 with Amsoil 5w30?
The truck now has around 110k or so miles.
Anyways, long story short, is it safe to be mixing the slick50 with Amsoil 5w30?
The truck now has around 110k or so miles.