MANY Amsoil Questions

[The Critic]

Last week or so, TS posted a comparison of Amsoil ATM 10w30 and ASL 5w30. Interestingly, they were both of the same formulation, though one is more shear stable than the other. Why?

In addition, is it a myth or is it really true that ATM does not thicken as badly as ASL because of the lower Volatility, even though the difference is only 0.3%.

Lastly, what is the longest that I should run the following Amsoil products if I don't plan on doing a filter change:

ASL/ATM/AFL- 1-year/7,500-10,000 miles?
TSO- 1-year/10,000-12,000 miles?

Thanks,
Michael


BTW, if anyone here is a Amsoil Preferred Customer, it'd be great if you could PM me with a price list. I want to see the actual pricing before I join.

 

[buster]

I'm not aware that their really is a difference between the two oils. If you follow what AEHaas has said, among others, I'd always go with the lowest viscosity at 40C so in this case the 5w.

The S2k from my experience has lower consumption, better fuel efficiency and less thickening over long drains. Their best oil for long drains right now is the Series 3000. I personally like 0w30 oils over the 5w/10w-30's.

Major reformulations are taking place due to GF-4 this year.

[ March 13, 2005, 08:57 PM: Message edited by: buster ]

 

[TooSlick]

Michael,

It depends on the quality and capacity of the oil filter you use. The Amsoil filters are good for 12,500 miles or six months; the oil will last longer than that. This new Mobil 1, extended drain filter also looks like it will be an excellent product. For diesel engines, I like the new Donaldson "Endurance", synthetic media oil filters.

The Amsoil 5w30 and 10w30 use the same basic additive chemistry. The basestock blends are slightly different. In your case living in a warm climate, I'd use the 10w30 in ever application unless it calls for 5w-20. In that case, I'd run their 0w-30, Series 2000 oil.

TS

 

[Dick in Falls Church]

Michael-
Preferred Customers will save 20-25% off suggested retail, depending on the product.

You get what you pay for. As a preferred customer, you save about $25 on a case of ATF.

If you are going to be a preferred customer, go through one of the site sponsors rather than take pot-luck at the company site.