i've always used delo 400 on my ford with no problems. is this oil still ok to use with my new 5.9? i've also heard some good things about mobil delvac. which is beter and why?

darren

 

You're gonna get alot of different answers. Delo400 is a darn good oil. So is Mobil. So is Valvoline Premium Blue. There are too many to list. All have different additive packages. Go to Bobistheoilguy.com and read to your hearts content...

 

thanks, trik!

 

I run Delo 400 in mine and all our tractors, it seems that most people consider either delo or rotella to be the best dino oil for these trucks, but any good name brand that is CI-4 or maybe it was CI+4 ( I cant remember look in the owners manual) will work. The important thing is what ever oil you use change regularly.

Also do a search on here, you will get more info than you care to read.