I should have said I'm looking for a specific brand recommendation that I can get where I live. I've looked online and I don't see a brand locally that is SAE 5W-40. I'd like to use Redline as I can get a good price on it, but I wanted to make sure that I keep the warranty in effect. I know how most oil threads go and I'm not interested in going there, just a specific recommendation if anyone has one. Thanks.