I used to use amsoil religiously in my civic commuter car (92 Civic sedan 1.5l) and when commuting 125miles each way for the eight months i did it, i got at best 54MPG (stock rating was 32mpg!).
I don't know if it had anything to do with the synthetics I ran in it, but it sure ran and shifted better than any other Honda i've owned (about 6-7 total, 2 with the same 1.5L engine). and i NEVER got anywhere close to that fuel acconomy.
Amsoil WAS expensive (we used to buy it at wholesale through the shop I worked at), but the shop we used to get it through was adamant that we only had to swap out to new oil filters for two changes and top off the oil, then on the third, change the fluid also like normal and he also said the oil changes could go to 5,000 miles vs. 3,000 for dino juice.
They also recommended a much thinner fluid level (0-20 vs the OE suggestion of 5-30).
i was super hessitant to do it, but he brought by the Amsoil rep when he came to town and he had a brochure that recommended these change intervals and he explained why it was okay. (too much to write and it was years ago, so I don't even know if i'd get it all right but everyone at the shop switched.)
with the every-third oil change, the Amsoil broke down to minimally more than dino-juice and less than all the rest of the synthetics out there.
I ran it like this for almost 4 years for over 80K miles without any problems.
I don't work near the place we used to get the Amsoil, so I haven't used it in my last two vehicles, but I have to say I was well pleased with it when I used it.
I won't use anything else when it comes to full synthetics.
as for now, i use Catrol Syntec blend for our cars and prolly something like Redline (just because of availability) in the GS.
[disclaimer] i do not suggest you only change the filter and only change your oil on every third oil change. speak to your local distributor of the product to verify all this information cus I still have my doubts about it on principal alone.[/disclaimer]
Comment