Exactly, one of its many benefits.

 

I put Pennzoil W15-40 in everything that has a piston in it and have not had any trouble with long Gevity in thirty years.
Pure base is the key to this oil.
That is my take on oil.
I have had some Hi performance engines that the builder recommended Mobile 1 synthetic W 0-50.
I think fuel injection has helped in long Gevity also.

 

I am a big Rotella fan. I change it about 30k intervals. I just change the filter at 10K. I have also gone the synthetic route, but seemed to have weeping problems with it on a 260k engine. I have had 1st gens that went over 1/2 million miles when I sold them and are still running untouched 10 yrs later.It's all in how you treat your engine. The oils today don't break down unless overheated. The EPA and oil companies would rather lead you to believe they need to be changed every 3k. I am trying out a Royal Purple blend on one of my trucks now. So far seems to run quieter than on Rotella. Time will tell.

 

Well, my research shows that Amsoil is not officially API certified, just API qualified. While I have no issue with the quality of Amsoil, I guess rockmike will not need to back pedal in embarrassment.

 

I was an Amsoil dealer for several years and dropped it. It is a good product but I just couldn't justify the expense even at extended intervals. The filters were the killer. I was running their full flow and bypass remote tucked under the front bumper. I never noticed a change in fuel economy after changing to Rotella T. I don't run the truck like I used to so the change interval is just about the same as when I was running Amsoil. Just a lot cheaper. Also my oil pressure at the turbo increased twenty pounds after I removed the remote filters and going back to stock.

 

I just wanted to let everyone know about the question of wether Amsoil is API certified. I did my "research" in spite of my busy schedule and found out why not all Amsoil products are not API certified. In a nut shell due to the changing winds of the diesel industry oil formula's are constantly changing. The API is a strictly volunteer organization that says your oil is "GOOD TO GO" which helps your reputation and marketing and API makes royalties from the endorsement. In order for Amsoil to keep costs down ie.R & D marketing,etc. etc. they choose not to get the green light from API. If you still question the quality or reputauion of Amsoil check out this link that I hope I am allowed to give here. If not PM me and I can provide the link to the API. It is [url]http://www.api.org/certifications/engineoil/forms/upload/PartCFillable.pdf[/url I hope this may answer any questions you have about not only Amsoil but any synthetic oil product.

 

I have heard people talk about synthetic motor oils being bad for engine seals and such, especially on an older vehicle. Is there any truth to this? I myself run Rotella but would consider running AMS oil if it beneifts the truck.

 

I started running amsoil synthetic at 413000k. The pan seeped but the trucks seals, including the oil pan, did not leak any more than they did when I ran rotella 15-40 conventional oil. It may not be that way for everyone, but that's how it was for me.

 

Howard Clayton's 1.7 million mile Dodge Cummins is a good testimonial for Rotella synthetic. He changes his oil every 10k and uses Fleetguard filters. I'm sure there are many other motor oils that would have given him the same results. It just proves to me that Rotella is one of the best motor oils available.

I don't use it just because of Howard Clayton. I started using it before I ever heard of him. I like it because I do more cold starts and short trips than I should with a diesel. The engine starts much better when its cold (5W) and still protects the engine when its hot (40W). It's easy to find and costs about $20 per gallon.

One more reason I really like it is because we can use it in our bikes. It is an absolutely excellent oil for the newer, high revving, four stroke engines and is JASO certified. Use it in my truck, bike, lawnmower, pressure washer, even my Honda four stroke lawn trimmer. I would use it in the car as well but it calls for 20W so I don't. It simplifies things, is convenient, gives excellent protection, and is reasonably priced.

There are many good oils out there. You just have to find the one that fits your needs. I personally think that Amsoil is overrated and I hate the way it is sold. Is Amsoil better than Rotella? I don't think so. Just like I don't think Rotella is better than Amsoil. They are both good oils. For me, Rotella just fits my needs better.

 

Well put, I think that is probably the best way to describe it.

 

I, for one, am glad you found time in your busy schedule to validate rockmike's info. I think that is the least you can do after you, not him, stated info that was wrong. An apology might be appropriate also.

I've said it before, I'll say it again. Amsoil is over-hyped and over-rated especially when you consider some of the other excellent oils on the market. It's a lame excuse why they aren't API certified. If you want to compete with the big dogs, you don't have a choice. May not be fair but that's the way it is. Taking the position that API is not necessary because people will be convinced that Amsoil is that much better will not work forever.

One thing I haven't said is this: The writting is on the wall for Amsoil products. Unless they change their business model, their market share will erode every year as people become more educated about motor oils. To the point that they either go out of business or are forced to sell out to a bigger competitor. I know this will ruffle many feathers. No need to start an oil war. Time will tell if my prediction comes true.

 

What info did I misquote? Amsoil has been in business since early 1970's. I doubt very much it will go out of business especially since the environmental whackos are trying to eliminate dino oil. Only time will tell you might be forced to buy Amsoil when that is all that's available. Wouldn't that be a Hooot!!!

 

What info did you misquote? Are you serious? When rockmike said he thought Amsoil was not API certified, you replied that he needed to do his research. As if it were certified and rockmike was wrong. Then, when replying to him again you said:

"I meant do your research before making statements. It will save you the embarrassment of having to back pedal."

Do you feel embarrassed having to back pedal? Normally when someone calls someone else out on the carpet and is wrong, it is appropriate to apologize.