mileage with amsoil

[rkennedy1]

With the cost of fuel going up I am always looking for better MPG.

Could Amsoil users give me their opinion on better mileage claims.

Thanks

Richard

 

[pwr2tow]

The faithful users and end claims users for spending more money will say yes it does increase fuel milage.



My 1999 dodge cummins came from the factory with conventional oil and fluids. I was looking for a way to increase fuel mileage so I ordered from amsoil differential fluid, transfer case fluid, engine oil and one more that I can not think of right now. I changed everything out at one time thinking finally I will get some better fuel mileage. I drove it for another 30,000 miles without ever seeing any fuel mileage increase. :{ My thoughts, I wasted good money. :{



Now on the 03 and newer trucks they come from the factory with synthetic fluids already installed and when you do fluid changes you have to use synthetics if you want your warranty to stay intact. :{

 

[WNowlan]

I do not sell or use Amsoil.



However I do have extensive knowledge on the subject of Heavy Duty Diesel Engine Oils.



TMC (The Maintenance Council), which is made up of fleet and industry professionals; have done and continue to do studies on this subject.



They have found by going to a 5W40 versus a 15W40 you can increase mileage by 3 to 5%. Both of the oils tested are synthetics.



In my truck I saw about 1. 5 mpg.

 

[Coolslice]

If you really want a mileage increase, use Amsoil and buy the Tornado to go with it. . :-laf

 

[JPruis]

I have always been a skeptic about amsoil and everyones claim of it being the best. But I finally took the leap of faith this weekend and was actually surprised. Every thing seems to run smoother. Before I could hear all kinds of clacks and pings and ticks. Now it sounds smooth with a uniformed sound. I may just be crazy but at least it makes me feel better. Not sure about the milage increase just yet but I will let you know after a couple of tanks.

 

[EMD-Run8]

I haven't heard too many on here make statements about Amsoil being the "best" but they were the first. It has provided noticeable improvements in mileage in every auto/truck I've ever put it in. My wife's Honda Odyssey gets 2-2. 5 mpg better with Amsoil than it did with petroluem oil. I did not see that kind of difference with my '04 QC. More like one mpg over what it was getting with Shell Rotella (also a very good petroleum based oil). It costs less than Redline, Royal Purple, etc and is primarily touted for use as an "extended drain interval " oil. I run it for at least 25,000 miles at a whack in my wife's van with no problem at all. It's a quality product from a long standing, reputable company. I don't believe you'll be disappointed.

 

[Diesel Nut]

Do so many things with my trucks and the increase is small enought that it really is hard to poin down Amsoil as a source of increased mileage. However, I do know that all my trucks I have used it in have run smoother and quieter. Most of my customers, especially in small cars, claim a decent increase. Amsoil claims between 3-5%. Bigger number on a 30mpg car than a 16mpog truck. But, still an improvement.

WHy do I use it? I feel it helps me to get better mileage, I don't have to change it every month, and I like the smoother idle, and I like the supporrt they give you if you have questions.

BTW- I run the Series 2000 5W-30 in my trucks.

 

[DieselFiend]

I'm not seeing any mileage improvements with AMSOIL synth 15W-40. However, I extended my drain intervals to 10,000 miles with good oil analysis. The benefit to AMSOIL is, with extended drains, you're paying about as much as you would if you changed it every 5,000 plus you've got piece of mind with a high quaility oil. Again, I see absolutely no mileage improvements with it.

 

[betterthanstock]

I'm not seeing any mileage improvements with AMSOIL synth 15W-40.

To see an improvement, use thinner oil 5w-40 or 5w-30. My 03 manual shows 5w-40 synthetic as the preferred oil.



Cummins has a report that shows 5w-30 as being actually a little thicker than 15w40 when hot ( due to the flatter decrease of viscosity of synthetics).



So you will gain at low temperatures, and lose mileage at very high temperatures, when mineral oil becomes water-thin.



I still like the extra protection of synthetics when shutting down a hot turbo, and most of my trips are under 20 miles, so I benefit from less heavy oil during the first 10-15 miles until it gets really hot. Maybe I'll switch to 5w-30 (from 5w40) and see what I gain.

 

[WNowlan]

To see an improvement, use thinner oil 5w-40 or 5w-30. My 03 manual shows 5w-40 synthetic as the preferred oil.



Cummins has a report that shows 5w-30 as being actually a little thicker than 15w40 when hot ( due to the flatter decrease of viscosity of synthetics).



So you will gain at low temperatures, and lose mileage at very high temperatures, when mineral oil becomes water-thin.



I still like the extra protection of synthetics when shutting down a hot turbo, and most of my trips are under 20 miles, so I benefit from less heavy oil during the first 10-15 miles until it gets really hot. Maybe I'll switch to 5w-30 (from 5w40) and see what I gain.

Viscosity is defined by SAE. A Synthetic 5W40 and a Non Synthetic 5W40 will have the same viscosity measurement at any given temperature. We do blend to a defined SAE range. Some oil companies blend on the lower end, some to the middle and some to the high. You and I can not tell the difference by feel, looks and an engine can not tell the difference.



This is why car engine oils are getting lighter is vis. Energy Conserving is the correct term. We now see that a F 150 uses 5W20. To improve fuel mileage.



The true benefit of the change from 15W to 5W is in resistance to flow properties. Which is by the way, part of the definition of viscosity.....



Lower resistance with a 5W with the same protection of the 40 on the high temp end.

 

[DieselFiend]

The issue I have going to 5W-40 as instead of staying with 15W-40 is the temp range I have where I live. We can dip into the negatives in the winter, then in the summer we'll see sustained temps over 100 degree F. The 5W-40 would be great if I lived in Alaska. It just gets too hot here for thin oil.

 

[pwr2tow]

It costs less than Redline, Royal Purple, etc

www.amsoil.com

www.myoilshop.com sells redline oils.



Click on the links to Check them out for prices.

 

[betterthanstock]

It just gets too hot here for thin oil.

You missed the point. The 5w30 is thicker, yes THICKER at high temperature than 15w40, because the slope on which viscosity decreases vs. temperature is flatter. That's what Cummins was showing in the graph, that by using 5W30 (and even more so 5W40) it would actually be thicker at higher temp, therefore costing you a little mileage vs. 15w40, which gets thinner at 230deg than 5w30 and 5w40. I said that since about half my miles are at lower oil temperature, I prefer to gain mileage at cold temp. with my 5w40 and to lose a tiny bit at high temp (vs 15w40). I also like the extra protection when warm, of a thicker oil, rather than the water thin 15w40 at 230 deg.



click here, then go to page 12:



http://www.everytime.cummins.com/every/pdf/MPG_Secrets_Whitepaper.pdf

 

[Diesel Nut]

You missed the point. The 5w30 is thicker, yes THICKER at high temperature than 15w40, because the slope on which viscosity decreases vs. temperature is flatter. That's what Cummins was showing in the graph, that by using 5W30 (and even more so 5W40) it would actually be thicker at higher temp, therefore costing you a little mileage vs. 15w40, which gets thinner at 230deg than 5w30 and 5w40. I said that since about half my miles are at lower oil temperature, I prefer to gain mileage at cold temp. with my 5w40 and to lose a tiny bit at high temp (vs 15w40). I also like the extra protection when warm, of a thicker oil, rather than the water thin 15w40 at 230 deg.

This would explain why Amsoil recommended I keep running the 5w-30 instead of switching back to 15w-40 with the amount of power I will be running.

 

[DPKetchum]

I've used and still do Amsoil oil products front to rear in four vehicles. TWO got at least 1 mpg improvement off the jump street. Two remained basicly the same.

 

[Bekim]

If you really want a mileage increase, use Amsoil and buy the Tornado to go with it. . :-laf

And get some magnets to put on the fuel line. And throw some salt over your left shoulder.
Cheers
Mike
###

 

[WNowlan]

You missed the point. The 5w30 is thicker, yes THICKER at high temperature than 15w40, because the slope on which viscosity decreases vs. temperature is flatter. That's what Cummins was showing in the graph, that by using 5W30 (and even more so 5W40) it would actually be thicker at higher temp, therefore costing you a little mileage vs. 15w40, which gets thinner at 230deg than 5w30 and 5w40. I said that since about half my miles are at lower oil temperature, I prefer to gain mileage at cold temp. with my 5w40 and to lose a tiny bit at high temp (vs 15w40). I also like the extra protection when warm, of a thicker oil, rather than the water thin 15w40 at 230 deg.



click here, then go to page 12:



http://www.everytime.cummins.com/every/pdf/MPG_Secrets_Whitepaper.pdf

The chart on this presentation is not a viscosity chart. A 5W30 is not thicker than a 15W40! Oo.



The chart shows the relationship between operating temp and fuel economy using the two oils. Because a 5W30 flows faster it will remove heat and provide better MPG. Also a syn has better heat tolerance. That is what is showing there



As far as the thickness of a oil, the chart below is used to determine the viscosity of an oil. If it falls in the ranges below that is what the vis is. Through shearing you can get a ?W40 to fall to a 30.



SAE VIS Deg C Range



30W 100 9. 3 - 12. 5 cST

40W 100 12. 5-16. 3 cST



The high temp wear rates for a 15W40 and a 5W40 will be similiar. We have found through extensive testing that you can see significant longer engine life and better fuel economy using a syn 5W40 over conventional 15W40 in the Class 8 engines. We are also testing 0W30 and 0W40 to help with MPG and newer emission regulations coming.





Bottom line is you do not give up engine life by using a thin oil .

 

[blacksheep4x4]

When I started my transport company I had to try and find a way to lower my fuel costs. I tried Amsoil and liked what it did for my trucks. The trucks ran smoother and I did see a small increase in fuel economy ( about 1 to 1. 5mpg). I also like the fact I could wait longer to do oil changes. This saved me time and money. These are the reasons I became a dealer. I truely believe it to be a great product, and appriciate the exstensive testing they do on thier products to give us the best oils they can.

 

[DieselFiend]

Ok, so based on this post, I think I'm convinced that I'll switch over to 5W-40 sythetic. We'll see what happens. I see that AMSOIL only carries 5W-40 in that european synthetic. Is that the stuff or is it another type? AMSOIL part number for it would help a lot! Very interesting debate on oils. Thanks for the info.

 

[GHarman]

AMSOIL use

Howdy, Been an Amsoil user for years. I am not a dealer. Here is a tip for those of you that have their own Business. Sign up as a Commercial Account with Amsoil. You must buy in quantity, can not resell, but you will buy your Amsoil products CHEAPER than Dealer cost. Hope this helps someone. Greg