one of my buddies used to build sprint cars and he said they used 20 50 valvoline and he uses valvoline in his car, he said they tried a bunch of different oil in their sprint cars to see what the difference was. He told me that they tried royal purple, pennzoil, valvoline, quakerstate, redline and some other ones. He said that the royal purple was a joke, then he also said but you have to think about what we were using it for. Their v8s turn 10,000rpms on the track and their 4cyls turn 12,000-14,000rpms on the track. He told me that he didn't like the RP for racing but he said its prolly fine for the DD or 4x4 or something like that. One of my other friends used to use RP in his monte carlo before it got totaled and he liked it. he said that it ran cooler and got better mpg's. i'd try it just to see how good it is, i'm sure that its better than the crappiest oil money can buy. Myself i want to try out the amsoil b/c its supposed to be really good.

 

i'd be interested to see the chassis dyno. they just did it on a stand. its gonna get less horsepower when its on the chassis dyno. looks like grape juice to me

 

were they running it in a BN engine? 'cause i know you're supposed to do the break-in period with regular oil first. you'd think the synthetic's would be much better @ the higher RPM<'s of race engines.

huh??? was that in reference to the filter, or the engine?

 

I've used Frams as long as I can remember, never had an issue. I recently bought a couple Purolators on sale and when it came time to change the oil, both filters crushed when I tried to remove them, made a horrible mess. Back to Frams for me

 

K & N is the way to go. It'll be pricey at first, but you only have to change it every other oil change (about every 5,000 or so). As long as your oil looks clean, what's the point as long as you have a really good filter?

 

I've had amsoil (and filter) in my truck for over 10K now, just barely starting to brown like most oil does around 1-2K, and the truck starts and runs better still now than most people's with fresh oil, i am a fan for life, have it in my 03 ZR2, 01 Grand Prix GT, 04 Passat, and both my bikes! (00 honda nighthawk 750, and 04 vrod) The bikes are what i actually started using amsoil in and noticed a huge difference in! I'm a preferred customer now getting whole-sale pricing and order from the company have it shipped straight to my door!

 

I personally will not use Fram filters. I started cutting my filters open a few years ago to inspect the contents. The place I worked had a pretty sweet filter cutter. Anyway, the internal construction of the Fram oil filter for my little s10 was so Cheap! The filter cartridge had end caps made of cardboard, where other manufacturers have metal or rubber end caps. Instead of a spring to push the filter onto the threaded part of the assembly, Fram uses a bent piece of tin. My co wprkers and I cut open a bunch of other brands of filters and wix, Napa gold and mobil one were the best looking filters as far as CONSTRUCTION. You will all have to get more info as far as performance from some of the other guys. Personally, I use Napa gold, wix or AC Delco. In that order.

 

I have used AMSOIL oil and their oil filter in my 06 Duramax diesel for the last 2 1/2 years with no problems whatsoever. I changed the tranny and differentials over to their synthetics last summer. I tow a 12000 lb 5th wheel with the Dmax which was my primary reason for buying it. I really like AMSOIL products and would recommend them to anyone.

 

i jsut use motormaster from canadian tire and never had any issues

 

It is hard to beat NAPA GOLD or WIX for the money. I have used them since the early 80s.