Mobil 1 5w40

[atk]

local Walmart is now stocking the Mobil 1 5w40 synthetic diesel oil...just wondering is this the oil some of you guys are using????it is a little cheaper
then what am using, which has been Royal Purple...any input would be great....thanks

 

[Crumm]

I have been using Mobil Delvac 1 for several years and it has did me a fine job. I have always purchased it at the local bulk plant, I will have to check out my local wal-mart and see if it is cheaper than the bulk plant.

 

[atk]

yeah i was just wondering if the Mobil 1 TDT 5w40 is comparible to the RP....i figured i coiuld save about 2 bucks a liter going with Mobil...i usually change my oil earlier then i need too, just want find a good oil at a reasonable price...have to make this truck last for a few years....thanks