Back in May or so, Iswitched all my fluids to AMSOIL; oil, tranny, transfer case, front & rear differentials.
Most of the driving I do in the truck has beenshort distances and mostly city driving.

The average MPG for the three tanks prior to the switch was 11 MPG.
The average MPG for the three tanks after the switch was 14 MPG.

So FWIW, it appears that switching everything seems to improve gas mileage....

 

Just curious as to how much the entire process cost of switching over? Are you saving the difference between 3 mpg? If so, then its worth it.

 

Switching out all the fluids in both vehicles, filters (oil and tranny), RTV, sparkplugs was probably close to $400 or so...
I am not going to have to change the fluid in the tranny, transfercase, or differentials for a while so I will get a return there..I change the oil once a year.

If I drove the truck more often than I do, I would probably get back the money I put into it sooner, but I only use the truck on the weekends or when it is raining during the week. I ride the motorcycle to the train station most days and until it gets too cold to ride (November or so, or when there is a chance of ice on the roads).

Given the crappy mileage I got last winter had I gotten 14mpg instead of 11mpg I could have saved about $125 (providing I did the math right!)

 

I've heard you mention the Amsoil many times and I had no idea the interval length was that long. I can see where that would pay off, even in the short term. I appreciate you telling me that. I was considering making a change to the full senthetic Mobile 1 that allows 15k before changing. Any thoughts on that since I can't afford the full swap with Amsoil, at least for now?

 

If you just want to change the oil the Amsoil isn't too bad on cost. I'm getting some soon for my oil and rear diff. Talk to turbo-tbird about it, he's an Amsoil dealer

 

Ok, let me clarify...

AMSOIL extended drain if you use their filter
Normal Service(3) - Up to 35,000 miles or one year, whichever comes first.
Severe Service(4) - Up to 17,500 miles or one year, whichever comes first.

(3) Personal transportation vehicles frequently traveling greater than 10 miles (16km) at a time and not operating under severe service.
(4) Turbo/supercharged vehicles, commercial or fleet vehicles, excessive engine idling, first and subsequent use of AMSOIL engine oil in vehicles with over 100,000 miles, daily short-trip driving (less than 10 miles), frequent towing, plowing, hauling or dusty-condition driving.

Now, with that being said I don't drive 35,000 miles in one year. Given that during most of the year I ride the bike, I may fall under Severe Service (short trips), but I certainly don't drive 17,500 during the winter either, so I change it every year. I did a oil analyis the last time I changed the oil and it was fine...

Now about cost I use the 0W-30 which is 9.99 a quart, but if you get the 'preferred customer' card that price drops to 7.65. Also cheaper if you buy it by the gallon (which I do as I have two vehicles). The 'preferred customer' card costs $20.00 *but* if you spend about $100, then you make that back in the discount. I'm buying for two vehicles, so for me it makes sense YMMV....

 

dang, im not having to do any work in this thread lol

dut yes, the preferd customer card does save money, deffinatly if you are going to switch the whole thing over which like others said will cost a bit. I will be doing mine when I get the chance. let me know if you guys need anything, I can also sign you up as a preffered customer. there is a catalog on my site in my sig or I can mail you one.

 

Please feel free to throw a 'consulting fee' our way for services rendered!!

 

lol

 

I'm sorry but you know what? i would never leave oil or an oil filter on my truck for more than 5,000 miles no matter what kinda guarantee a company gave me! like seriously who would leave oil in there car for a year? likei met this one idiot who bought that Mobil one 15K oil...and left it in there for 15,000 miles... oh oyeah his motor was gunked up! but yeah uhm sorry thats just me...i would never do that! i use synthetic and I change it every 3,000miles...I know you can change it every 5,000 but i just change it every 3,000.