Based on an earlier post I made here someone put me on to Amsoil products. I was looking for transmission and rear end lubricants. I decided to order their transmission fluid and rear end lub.

The dealer asked how about engine oil? I said what about it? He said Amsoil would add 6 to 8 HP. It's a better lubricant yad yad yad and you get better HP. He said it is far superior to Mobil. Any opinions appreciated!!!

I love it just when I accepted paying $5 a quart for Mobil someone suggests $8 for a better product!!!! And timing being everything I just changed oil last week!!!

Greg


[Modified by Greg00Coupe, 4:02 PM 12/4/2001]

 

Being a dealer myself, I have seen the data, and yes, Amsoil will likely increase your HP some. I noticed about a 6 HP gain by putting Amsoil products in my engine, transmission and diff. I also picked up a few (approx. 15) by using the Amsoil air filter with a mod of my own to the cover (this was before the 2002 cover was available). Check out their website for more info. It is http://www.amsoil.com.

I will be the first to say that I was skeptical at first. I spent a lot of time researching the Amsoil products along with other synthetics before I switched. I looked at all the technical data avialble from many sources. As a Chemical Engineer, I am very skeptical by nature of any new lubrication product. But, this one performs. A freind and I are working on a comparison study for race applications comparing Amsoil to the other synthetics on the dyno. We have some preliminary data, and so far it looks like the Amsoil engine gained about 5 HP over "another" well known race synthetic. This is beneficial for the spec race crowd for obvious reasons! :cheers:

 

I have to agree. I have used Amsoil for years and have had excellent results. When I switched my 300ZX over to it, the idle got smoother and it revved noticeably easier.

I did a one time rear end switch out on my 86 TA years ago and it solved the problem of having to change the fluid every 12K miles permanently.

Oil consumption was significantly reduced or nonexistent in every car I've used it in.

JMHO & experience.

Ed

 

Maybe some Hp increase againist DINO OIL but another synthetic?? :bs

 

I'm with you on this one...I do not believe there could be that much of an improvement over Mobil1...

 

Please post anecdotal evidence that Amsoil in the engine will boost horsepower by 6-8 hp over Mobil 1. I can see that claim being true over dinosaur oil, but one synthetic motor oil causing a 2% increase in horsepower over another synthetic motor oil? I flat out do not believe it. Prove me wrong. None of this "SOTP" crapola, either. Use facts to change my mind. I am an empty vessel here... ;)

 

So far we have tested one spec Ford engine. We started with Valvoline regular Dino oil. We measured 221.3 HP and 189.1 RWTQ at 6500 RPM. We then switched to another synthetic, he raced, and we tested after the race. The numbers; 223.4 HP and 190.4 RWTQ at 6500 RPM. We then switched him over to Amsoil, he raced again, and the new numbers after the race; 226.5 HP and 190.6 RWTQ.

This is preliminary data only! We have tested only one engine, and only run it 3 times. We attempted to ensure similar test conditions, but that is nearly impossible. Our goal is to repeat the test on at least 2 more similar engines. At this point, if I make the same claim that many of the mod providers do, I will have more data than they start with, but I am not willing to make the claim to that extent yet. Before anyone else says it; the changes we saw may be explained by differences in conditions, accuracy of the dyno, even luck, and are only provided here to answer the "mail".

When we have the full set of tests next racing season, we will be publishing them. :cheers:

 

I just did a thorough review myself of Mobil-1, Redline, Amsoil and a couple of others. In the end I went with Amsoil. I am not affiliated with them at all. I found that their oil is thoroughly tested, the same base stock at Redline and the 100 C viscosity numbers were superior to all other oils including Redline. I have not changed my engine oil yet, but I did change the rear and the tranny. The tranny shifts much smoother especially when cold. I am very pleased with the results so far. As far as price, if someone is charging you $8 for Amsoil, you are paying too much. List is $5.75/quart for 5-30 oil. I am not sure about HP increases, but since I just spent $50K on a car that it took me seven years to save for, I plan on using the best that I can find. The best being in my own judgement, check out the data yourself and then make a decision on what you feel is the best for you to use.

 

I'm changing to Amsoil when it's time. Unfortunately it's winter here and I only have 130 miles on the car. In the spring I'll change the fluids (once I get 500 miles on it). Hopefully we'll have some nice winter days and I can take it for a cruise. :yesnod:

 

I'm ready to jump on the Amsoil bandwagon. Mainly I'm looking to smooth out the tranny. I was ready to jump to Redline but someone mentioned it is not API(?) certified. Not sure that is a deciding factor but helped make my decision.

Plus the fact that I E mailed Redline twice over a week ago and left a voice message for a dealer but never received a response. Made my mind up.

 

Thanks for the info on Amsoil. I have been doing a little "library" research on oils and I am going to switch to Amsoil on my next change. Looks good. :smash:

 

Went to the Amsoil site and found a lots to choose from---the problem is I don't know what I need. Tell me which Amsoil product you're using for engine oil, transmission fluid, etc. Thanks.

 

Where to buy Amsoil? Is it sold at the major auto parts stores?

 

It's sold through their web site http://www.amsoil.com. Used to be through regional dealers only. Last year I had to join as a "preferred customer" to get discounts ($25/yr. which you make back easily through discounts), but I believe you can just still buy direct off the web site.

They have a very extensive range of products and have been around since the mid '60's, if I remember correctly. The testing of their products is stringent and very extensive, as you can read about on their site. Everything is first class. They make every thing from automotive to marine to heavy equipment lube products and much more. Their polish is even pretty good (not like Zaino, though). They make their own filters and sell Hastings filters as well.

I've had great results with all the Amsoil products I've bought over the last 20 years. Learned about Amsoil from my internal combustion engines professor in college who did research for Ford. He was totally sold on the stuff even back then.

Ed

 

Oh crap, not another product that you have to order (can you say Zaino!). What a PITA. That alone may keep me from using it. If anyone has any info on buying it locally in the Houston area, I'd sure appreciate the info. If you've bought it for 20 years, they obviously had another method than the internet. Hopefully the answer is not mail order.

 

Was that done on a brand new possibly tight engine? I wonder what the results would have been after you put dino oil back in.

 

Interesting, since this thread started I found an article in an old Corvette Fever that indicates HP increases in the same range, around 7 HP.

 

Well, they still support local/regional distributors - individuals who sell it themselves. So, you should be able to find it locally. Every place I've lived has had several guys selling it near me. These guys are always very well informed on the technical aspects of the products. They're usually real car fanatics.

But, ordering it online is simple. They have cross referencing functions to find the right stuff for your car. Last time I ordered it was a piece of cake. Picked what I wanted and it showed up a couple days later, exactly what I ordered. Their techs are very knowledgeable and helpful. They have tons of catalogs/brochures you can get to become more informed about the company and their products. Very well done - everything is first class and professional, as it has always been.

Amsoil has always been advertised by word-of-mouth only and has done extremely well. They are fanatic about publishing testing methods and results and have always exceeded manufacturers' rec's. They also are very upfront and informative about discussing warranty issues and the implications of using their products in vehicles still under manufacturers' warranty.

Ed

 

I have used Amsoil since the early 80's. This is the best stuff out there! (IMHO of course!)

To prove it to myself I have had oil analysis done. The oil does hold up extremely well. My cars are always one of the 'stronger' running stock cars from the factory. I think this is due to Amsoil's excellent piston-to-ring sealing capabilities. A tighter seal gives you more HP. Hence; I have virtually NO oil consumption.

My brother was and still is an Authorized Independent Amsoil Dealer. I can get Amsoil at cost. Lucky me. If I had to I would even pay full price for this stuff.

What Amsoil produects are available for the C5? This is what I reccommend:

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil
AMSOIL Synthetic Automatic Transmission Fluid
AMSOIL Series 2000 Synthetic 75W-90 Gear Lube
The AMSOIL Super Duty Oil Filter (SDF32)
AMSOIL TS Air Filter (TS83)

Unfortunatly, Amsoil only sells the stock-style air filter. I use the Donalson Blackwing to bypass the restrictive stock airbox. If you use the stock-style air filter I reccommend using this air filter.


The real performance gain is with the Series 2000 products. Use these.

I can't say that Amsoil will give you a 8hp-10hp increase over other synthetics. I just know that the more mileage I put on the Hardtop the stronger she gets.

I recently had the car serviced by the local speed shop. They said this is the FASTEST 'stock' C5 that they have driven. And, yes, they know about the mods on the car.

I was hoping some of you on this board would realize how good this Amsoil really is. The cost may be hight but the results are really worth it.

There is a gentleman by the name of Byron Selgrady at Amsoil that is VERY knowledgeable with this product. He has been at Amsoil for as long as I can remember. Please give him a call at 715-392-7101 in Technical Services for any of your questions to be answered.

 

I agree that the 0W-30 is a very good oil and considered using it in my 02. However, the owner's manual is very clear on the oil weight and even though I had to special order it I went with the Amsoil 5W-30. Other then this, I wouldn't hesitate to use the 0W-30 as the 100 C viscosity is better then that of Mobil-1 5W-30 and 10W30. Just my opinion.