Good buddy of mine owns a heavy construction business. Up 50 ton crane service, pile driving, etc. Lots of big mean equipment with big crankcases. He started buying into the AmsOil thing and built some spreadsheets to look at extending service intervals, etc.
Changed the oil in the dry sump and the primary on his Harley to AmsOil and rode to my house. Motor was sounding like a can of marbles and he was shaking his head. Said he followed their recommendations. Summer and about 95* out with some good hells in between.
We dropped that oil, and filled with my small stash of GTX 20W-50 and he went home. Called the next day and said engine sounded normal. Did not like the clutch action, so was changing that now. Put Harley oil in there and still in there two years later. Much easier to shift and quieter.
I have no personal experience with AmsOil. I have friends that swear by it. But that guy (Chris) will never put AmsOil in anything again. I doubt it ws the oil - it was wrong recommendation/application. But they lost a potential volume customer on that deal.
Jeez, I have four of the bigger refineries within a hours drive. I can get Chevron rep or a Redline rep on the phone easy and onsite in a day, two at most. Never had a lube related failure from either line that includes antique water mills exposed gear lubes to blown nitro motor rails. And NEVER a bad recommendation.
Does that make me a fan boy - no. I do use their stuff if the price is close. But I've gotten really good service from Mobil products and from Ashland too
Plenty good choice, just do your homework ...
