Originally Posted By: boxcartommie22
all their oils have the sn rating on them!!!iam looking at a qt of 5w20 sitting right here..changed oil last week. probably is an old bottle you have.red line does extensive tests on all their products!!!they don't just slap on a rating!!
You may want to take another look at that bottle and see if there is an actual API donut pictured there.
To the best of my knowledge, Redline states that their oils are "recommended for API this and that", but they don't actually carry any API approvals. As was noted by a previous poster, Redline uses very rich additive packs in their oils, way over current API limits.