I am going to do a used oil analysis on my Sierra at 145k miles, I was curious do I have to make an account with blackstone prior to mailing my sample in or how does it work? I have the sample kit already, do I just take my sample mail it in or what?
Thanks for the input. I am doing a used oil analysis with Castrol GTX just to check up on any possible coolant, and fuel dilution, I guess the car has enough miles to warrant a quick check up.
Thanks for the input. I am doing a used oil analysis with Castrol GTX just to check up on any possible coolant, and fuel dilution, I guess the car has enough miles to warrant a quick check up.