Synthetic Versus Standard Oil????

[Bamafan]

I just purchased a 2007 F350 SRW The truck has 190000 miles on it. Wandering what advantages would there be if I went to synthetic or if I even shoul. I don't know what has been ran in it.

Thanks

[police251]

Well at 190000 I would be running synthetic for sure... Thats alot of miles what type of use did it have.. I would also do a complet service on everything

[PGreenSVT]

I suggest synthetic for a lot of reasons. Lots of folks have good luck with the Rotella T6. I recommend 5w40 and change every 5k-6k miles unless you have the oil analysis done that says it's ok to go farther.

[DevilDocTater]

I have had good luck with Rotella T6 5-40 Synthetic. Your injectors will love you and continue to work!

[eberlestock]

Synthetic for sure. I even run it in the lawn mower.

[emilio]

I bought my 04 f250 4x4 with 165000 and put t6 syn as soon as I got it. I used syn in all my trucks and cars I owned.

[mah77]

I felt a noticeable difference when I switched to synthetic.

[police251]

What is the best transmission fluid to use... I am still running the ford motorcraft

[mah77]

Fords Mercon LV/SP is what's recommended, and is what I'm running. It's a good fluid. Others run Royal Purple or Amsoil without any complaints

[PGreenSVT]

I wouldn't put Royal Purple in a lawn mower. If you aren't going to use Mercon LV I think the best is Redline D6. It's expensive though.