i run amsoil in my harley and it made the emgine run smoother,quieter, and cooler, I will be switching to amsoil in the alpha at the first oil change

 

I've run royal purple in every vehicle that I have owned and wouldn't run anything else. My uncle turned me on to the oil when I was 16 after showing me ball bearing stress tests that they did in the chemical refinery he was working at. The one using Royal Purple had FAR less wear after the test. I have run 10,000 miles in between oil changes in some of my cars (even after lots of autocrossing and drag racing) and the oil comes out just as clean and purple as when it went in. No burnt smell, slick as seagull s@*#!! I also notice that the engine runs smoother at the top end of the rev band, with less NVH. I can't tell you of any gas mileage improvements because my style of driving wouldn't exactly be approved by the EPA!Hell IIRC John Force or someone else lost their sponser years ago because they were putting Royal Purple in the barrels of the oil company that was sponsering them!

 

I've been running Penzoil Platinum Synthetic since my second oil change and I will be moving to AmSoil on my next change, I have a local AmSoil dealer and he has moved into a new location so he should be up and running now.

I know that many racing teams use Amsoil even though some teams have "other" oil sponsors.. kinda funny but it's true. Also, do yourself a favor and go to Amsoil's website and spend a half hour or more reading their info. I'm sold on the stuff. I've been using AmSoil Sabre 2 cycle in my RC helicopters and burn Coleman camping fuel instead of petrol and man what a difference! Motor runs like a top, great transitions, smoother idle, more power and no smoke. Cylinder wall still looks new after a few years of flying.

 

IMHO, I do notuse AMSoil simply because of their marketing tactics. They tout their oil as the best using new oil in the tests when the additives are still good - which we all know dont last very long. Once the additives have worn off, it's a whole different story.

Redline gets my vote for all holes, except for the engine. I useMobil1sincemyauto engine oilgets changed more frequently and Mobil1 isreadily available everywhere.

I use Mobil1 in myauto engines and Redline in my air-cooled Harley. I am a firm believer in Redline as it's made with the best class stock as F5 also noted above and can withstand extreme heat best due to this fact.

Knowing all this... there is nothing wrong with AMSoil, Royal Purple or Mobil1. They are all good oils

 

If you are going to use Amsoil (which I do) make sure you buy their filter and get
the full benefit of 15K mile intervals. I use it in my 07 H3 and my 05 Canyon. I go
1 year or 25K miles with my Canyon. 25mpg and has never been in the shop. The
H3 is getting just under 20 and hoping to get better after installing hilljobs cold air intake.