Ford f259 sd oil

[Dennisw]

I have been using rotella triple protection 15w-40 oil for a few years would like to on next oil change to go with rotella full synthetic 5w-30 for diesel. Would there be any foreseeable problems

 

[BIG JOE]

I used Rottela 5w-40, Full Syn in my 2K 7.3 for 250+K.. and have used it in my 012 6.7 since the first oil change. Absolutely No Issues @ 37K. (lots of 5r pulling)

Joe.

 

[JLDickmon]

I used Rottela 5w-40, Full Syn in my 2K 7.3 for 250+K.. and have used it in my 012 6.7 since the first oil change. Absolutely No Issues @ 37K. (lots of 5r pulling)

Joe.

Listen to Obi-Wan, you shall...

 

[DaveBen]

I also think these guys are right; 5W-40.

Dave

 

[RSG]

me 3. I use Mobil ESP 5W40, same idea...192k.

 

[john griffin]

I switched from Amsoil 15w-40 to Rotella full synthetic 5w-40 last fall.Starts and runs better and quieter.It gets cold up here in winter and the 5w-40 starts much easier.I have also been adding Liqui Moly for the last 2 years.That helped with the quietness also and I did pick up a solid 1 mpg with it.I am considering useing thier full syn 5w-40 oil that already is dosed with the moly additive already in it.