Whe i trie dsynthetic oil...I DID a full engine flush.
BUT like my previous post said: AMSOIL must be some sort of miracle oil, becaus eI have tried the off the shelf ( castrol) and wasnt worth it.
I did read amsoil website, but for a company claiming such lon gtime between changes, Id think they'd have more of a Gurantee style statement with them.
Ill stick to my cheap oil, you stick to yours. BTW
How long have u used Amsoil for? TIme wise and mileage wise.
Originally posted by "Illswyn"
You said you tried synthetic...for how long? Did you do anything besides drain and fill with synthetic? For an older engine, you should first use a engine flush to get the old crap out. The filter is important as well. That's why I included filter costs.
I don't know what would convince you. I pointed you to the Amsoil website. If you didn't read it, you're asking questions based on your experience with another oil, not designed for extended drains. Then you question my numbers, which were fairly conservative.
Synthetic oils are made for both diesel and gasoline engines. I still don't quite see how synthetic oils are "thinner" than conventional oils. I'm emailing their tech-support to find out what the story on that is.