Thanks for the reply. If I am not mistaken, this is not the same oil you would want to use in vehicles. The formulation I believe is different. I asked Amsoil if they made a 0W-40 and the gentleman asked me what vehicle it was for and when I replied he said he had 5W-40 that should work but not 0W-40. I have been a dist. for them for several years but to be honest, it has been only for discounts on my usage. I use it in everything I own. It is one of the best oils available and it does beat Mobil 1 as well. I was disapointed to find out they did not have something available. The guy could have been correct hat the 5W would be fine but until I see where it is in writing, I will stick to Mobil 1 for the SRT.

Steve