one of my old coworkers used amsoil since they were the only ones to publish data about their product. from his years of engineering, his line is "show me the data".
Data not verfied by any organization worth a toot.
If Amsoil is so good, what's with the pyramid scheme sales model?
Amsoil is good, but it and Royal Purple's reputation for being magic oil that lets you go 10,000 miles between oil changes is suspicious to me. I'm confident using Pennzoil full synthetic and sticking with 3,000 to 5,000 mile oil changes depending on conditions. I never saw the point of using Amsoil or Royal Purple.
why use good oil for a 3000 mile change, that's such a waste. Just stick with dino oil unless the car calls for something different.
why use good oil for a 3000 mile change, that's such a waste. Just stick with dino oil unless the car calls for something different.
Amsoil is good, but it and Royal Purple's reputation for being magic oil that lets you go 10,000 miles between oil changes is suspicious to me. I'm confident using Pennzoil full synthetic and sticking with 3,000 to 5,000 mile oil changes depending on conditions. I never saw the point of using Amsoil or Royal Purple.
Yea, 3K is considered a very short interval in these days of tighter engine tolerances and FI. A lot of people still swear by it because "it never let me down" or "that's what Dad taught me" but just does not apply with today's automotive and lubrication technology.
i can brake better than abs, fix my own car as it constantly breaks down, and achieve double-digit fuel economy on a good day, just like a hybrid. everyone knows its better to be thrown clear of a crash and the best color is primer gray.
Hm, not sure if serious but I was taught to work on my own cars but then again in the '70's so was everyone else.
Yea, 3K is considered a very short interval in these days of tighter engine tolerances and FI. A lot of people still swear by it because "it never let me down" or "that's what Dad taught me" but just does not apply with today's automotive and lubrication technology.
Besides questionable sales tactics the data is not independently verified as Fenixgoon pointed out. Synthetic oil performs better than standard motor oil because the molecular chain has been re-engineered to have certain characteristics such as improved cold pour point, and perhaps anti-oxidation qualities.
3K is not a short interval for severe duty conditions, such as many starts in subzero temperatures and short trips.
I have 500K+ miles on all my vehicles since I started driving. I only ever followed manufacturer's recommendations for oil type and change intervals.
I haven't had a single worn or nearly worn or even more than lightly worn engine in all those miles. I put 328k on on car. Everything was shot BUT the engine, which still had excellent compression when I sold it.
Regular Pennzoil in regular engines. Synthetic Pennzoil in hard duty engines, and Rotella in diesels. Zero problems.
The only people that I knew who used Amsoil were back-country rednecks who always drove around on under-inflated tires and other forms of mechanical neglect.
But der ohl was gud huh.
3K is not a short interval for severe duty conditions, such as many starts in subzero temperatures and short trips.
Toyota's severe service interval is 5k.
http://www.toyota.com/owners/web/pages/faqs
Subaru's is 3750, IIRC. So, it'll depend on the manufacturer, but AFAIK a 3k recommendation is rare to find these days.