Originally posted by saw man
Redbull : your comment about mixing synthetic is not true, I do it all the time in my car. Same brand but different weight. I also know people who use totally different brands, but you should know about oil if you want to do this.
a good site for you to check out if you are interested go to the forum section.
I meant brands - you can't mix opti & amsoil. you can mix weights because no matter the weight the "ingredients" are the same