I'll have to check at Atwoods and see if they have it there since they carry a TON of Mystik products. I currently run Motorcraft, but I'd like to be able to run syn for winter time. My truck just doesn't seem to agree with me though--LOL. Maybe the Mystik will do the trick.

 

I use 5w-40 Delo 400 in my 03 I won't go back to anything else the truck seems to run better.

 

mobil 1 here--5-40 every 5k

 

I run Mobil 1300 15W40 here in the TX climate. It really is the sleeper oil on the market being a group III oil for ~ $13.00/gal and I've seen some outstanding UOA from it. I've run this oil now in my 05 with 110k miles (except 15k Rotella syn) and not one injector problem, no EGR valve sticking, and no start up or running issues at all.

BTW I'm seeing alot of recommendations lately on valvoline products and the 15W40 is a group II oil and the Synthetic has not yielded great OUA that I've seen and the price is just not justifiable for me for either of these products.

 

I'm gonna give it a shot, not to mention it's $17.99/2 gal jug of 15w40 syn blend PLUS it's got a $2/gal rebate through the end of the year. I wish they had the 5w40, but they don't even carry Rotella 5w40 at atwoods.