Amsoil vs. Rotella Oil in 6.4

[fishnmachine]

Which oil is better to use: Amsoil or Rotella

[Vettester]

Im going with amsoil Series 3000 SAE 5W-30 Synthetic Heavy Duty Diesel Oil, and the BMK21 By-Pass Filtration System.

[hopperwagonbob]

I use John Deere 15w40 cj4/sm its made for ag engines that run at maximum load 95 percent of the time. Where as rotella is for over the road trucks that vary load a lot and maximum load 20 percent of the time. Now this is from my local Deere dealer techs not from Shell. And I run the Deere in all my semis tractors and combines to. So I only got I oil on the farm. 5 gal at a time is around 13.00 a gal. 55 gal drum is like 12.50 a gal.

[F350jim]

I've heard of people using AMSOIL. How about Royal Purple?

[08pwrstrokr6.4]

im looking at rotella but would like to see what more people are using in their 6.4s

[jac97psd]

As long as you change your oil every 5k miles there is no point using the expensive stuff. I use Rotella 15w-40 since new and not one problem. I got the truck in June '10 and I have 40k miles on the truck now.

[larry782]

Shell rotella 15w-40 all the way use it in my cummins and powerstroke never had one problem with it.About 87 bucks for a oil change.

[gabelnj]

I use Amsoil with a bypass, 20K on it now. Last test came back Good 2 go, change filter and top off.

[yanko10]

i wouldnt use neither. 1) they leave sludge 2) they both void your warranty. and 3) yes the dealer will know. hope that helps. btw, rotella and motorcraft are the same price at your local auto part store.

[jrstang473]

Originally Posted by Vettester

Im going with amsoil Series 3000 SAE 5W-30 Synthetic Heavy Duty Diesel Oil, and the BMK21 By-Pass Filtration System.

+ 1 on this, i use this oil . Reducing friction in a 6.4L can free up some extra power. Oil temp's can cool down a whole lot faster with this oil vs motor craft.