Steve, thanks for the link. I agree, has to be the best site regarding
Oil that I have seen, more rainy day reading.
I will definitely share w/ the mechanic that mentioned Shell Rotella and post a Thread on the Corvette Forum as
oil/lube selection is a common topic. For the Corvette Z06, GM/Chevrolet recommends only the use of Mobil 1
synthetic oil and I always wondered what, if any, the arrangement was between the two companies. To the extent, the oil recoomendation is labeled on the oil filler cap.
Don