Comments about Amsoil

[85Dave]

I found information about Amsoil, and other oils, at BobIsTheOilGuy. You'll have to search around to find the right thread. You can also find info on Redline. Redline is primarily Group V, which is a "better" base stock. And it has a lot of good additives.

 

[Hartman]

Do you have a UOA performed on this oil? Please post the data.

No, nor do I need one, I have much more important things to do in my life than to send my old oil to someone so they can analyze it. If that's your thing, fine. I change my oil and filter every 3k and that works fine for me.

 

[CDW6212R]

Say Al, have you cringed at each of the suggestions to go so long with regular filters?

I'd like to find time to install a bypass oil system, which filters much more particles from the oil, keeping it cleaner. That type of system can safely stay in an engine for many times as long as a regular filter.

Most regular filters(say under $7) will not filter much beyond about 5000 miles. The biggest problem is the amount of larger particles which will be circulating throughout the engine. Beyond some life period like 5000 miles, the oil is too dirty then, no matter what kind of oil is used. In my keepsers, I use a synthetic oil, usually Valvoline or Mobil 1, and a Motorcraft filter, for 3000-5000 miles.

More effort and money should be spent on the filtration system, before extending the change cycle. Good luck all,
Don

 

[85Dave]

Most regular filters(say under $7) will not filter much beyond about 5000 miles.

What is the basis for this statement? Why do many auto manufacturers recommend oil filter changes well beyond 5000 miles? Do you know something they don't?

 

[CDW6212R]

Unless some magic has changed inside the cheaper filters, they begin to bypass unfiltered oil at some point in their life. Generally common knowledge has been that that point is somewhere in the few thousand mile range. That is why a great many people have chosen to change the filter, and oil, at 3000 miles. They want to lesson the risk of going past the effective usable life of the cheaper filters.

I understand that some filters are made better now, but a lot of that is in the strength of the mounting flange. The more expensive filters are advertising that they filter oil longer, because of some special filtering media, which will hold more debris without bypassing oil.

I don't know tha magic mileage where each filter will stop filtering oil, that is a huge subject, and subject to debate.

Try to rely on first hand experience by people who have used the filter you are considering, for uncounted filter changes. I try to not rely on advertising, or new product promises, including car manufacturer promises. They want to sell you something now, or sell you something when it wears out. Good luck,
Don

 

[85Dave]

I do rely on first hand knowledge. There are hundreds of used oil analyses available for your inspection on the internet. I have looked at over 100 of them myself, and have yet to see a single analysis that questioned the oil filter's capacity. If you have any independent analysis that shows otherwise, please share it.

I have also seen some discussions on who makes a good filter. Some of the cheap filters suffer from internal damage. In general, avoid Fram and the low end Champion filters. High end Champions (Mobil 1, K&N, Amsoil) are good. Wix and Purolator make some of the best. Motorcraft is made by Purolator.