What kind of synthetic oil to use in my 6.0 Powerstroke?

[king ranch keeferbox]

I have a 2005 F-350 with the 6.0 powerstroke, i'm looking to do an oil change today and switch over to synthetic, which is the best synthetic oil to run in it? And another question what should my ECT's and EOT's average? I think my truck runs a little a hot..? Thanks

[CassMori]

Personally, I run Rotella T6 5w-40 Synthetic.

[WarChild]

This is a big debat on here. There are lots of threads about it. I also use T6.

[2 stroker]

My deltas run ECT 192-194* EOT 198-200*
2 stroker

[Lilfarmrboy]

I run Rotella T6 with no problems whatsoever, but if you want a true synthetic with no Paraffin (some believe this is what casused stiction) then use Amsoil brand.

[ebusa]

Mobil 1 Turbo Diesel Truck 5w-40 full synthetic, at your local WalMart

[Evil Eye]

Rotella T5 in the wintertime and T6 in the summertime. It's been in the 80's and time to change my oil, so today she will change to T6.

[jetjock15]

Mobile 1 makes the best off the shelf synthetic. Turbo diesel found at walmart, or Mobile 1 Synth Delvac can be found at truck stops, its the heavy duty version, what i personally run, but spendy...

[Lilfarmrboy]

Originally Posted by Evil Eye

Rotella T5 in the wintertime and T6 in the summertime. It's been in the 80's and time to change my oil, so today she will change to T6.

Shawn, if you don't mind me asking, why the different oils in the different seasons?

[DoubleDpsd]

I currently am using Valvoline extreme blue. Will be switching to Mobile 1 5w40 next change. I also considered Redline's ester based 5w/40, pricey but supposed to be good.