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A close friend bought this truck new. He is buds with the fleet manager at his job so he had the oil changed religiously every 3k. When he was ready to trade it in I offered to buy it. He was changing the oil that weekend so I gave him 5 qts of Mobil 1 10-30. I tlaked to him a month or so later...

I have a 99 Tahoe. I pull a 3000 lb boat. The manual says to use OD/Drive with a circle around it unless you are in hilly terrain. At freeway speeds the rpm drops from about 2500 to 1700 when I shift from 3rd to OD. My typical haul is 75 miles on flat ground at 75 mph. The last 40 miles are a...

Seems to be pretty pricey. Anybody ever used it? "Exceeds JASO FC and proposed ISO-L-EGD" How does this compare to MOBIL 2R (MX2T)?

I've got too many motors and not enough time or money. I live in Sacramento CA, mild winter hot summer. I have a 99 Chevy Tahoe 5.7 and a 97 Maxima with a 3 litre V6. Both have over 100k on them. We drive each about 20k a year. I was at The Wal Mart today. Mobil 1 10-30 was on sale for $20 for...

I have a 99 Chevy Tahoe 4X4 with the 5.7 motor. I do lot's of highway driving pulling a boat trailer. I have AMSOIL 5-30 in it now. I know this is the weight they spec when it's new, but it has 110 k on it now. I live in Sacramento CA so Heat is a factor, Cold is not. I drive alot so 6 month OCI...

I just picked up a 14' fiberglass boat to do marina duty from my Houseboat. It has an old two cyl Johnson Sea Horse 10 hp motor. It has been painted with a brush so I cant find any #s. Judging by the engine cover style I'm guessing it's early 70's. Looks like a robot with tail fins. It runs...

I have a 99 Suburban with the 5.7 Vortec It take a standard size filter. I recently ordered AMSOIL oil and filter(SDF25) for my Brothers 2000 PU with the same motor. I was shocked when I went to change the filter. It is a NAPA 5210. It is the same size as the filters on my old HONDA 750. Approx...

Just got the newsletter and was interested in what the AMSOIL guys know about the new oil. I think it's called intruder or interceptor, something like that. They did a couple tests on snowmobile fleets. Sounds like it falls between AIO and Series 2000 racing oil. Price is only a little higher...

I've read everything I can find about high performance 2 cycle injector oil I can find. I keep seeing references to Schaefers. What do they make? Where can I get info? Where can I buy some? How much per Gallon? BTW this is for a ROTAX watercooled motor with power valves. 951cc displacement...

I copied this article from another forum. There is a raging debate in the SEA-DOO world over them requiring their own oil at $35 per gallon. I like many others are confused. I'm starting to understand this stuff but I'm still confused. How can AIO work for TCW3 and API-TC applications. Rotax...

New to this site and I've already learned alot. I run Rotax water cooled motors in SEA-DOO brand watercraft. These motors are very hp dense and require very good oil. They are alot tougher on oil than typical outboards. Castrol makes a custom blend syn for them at $35 gallon. I'm in the process...