Smokersteve

I use mobil 1 5w-40 diesel oil in my 2004 cayenne s porsche, 2005 carrerea s porsche, 2006 Mercedes r350.

I do this for the extra lubrication and the oils are built tougher than gas oils.

But those 3 cars are build to run on 40w.

The ecoboost is built to run on 30w.
If you were at 100,000+ then using 40w is not that bad of an idea.
Just keep the cold weight of oil at 0 or a 5.
0w-30, 5w-30, 0w-40, 5w-40.

All of these new engines are using thin oil. They should not have anything more than 10w-XX. Try and stick with 0 or 5.


Uese a 30w diesel oil.

bubbabud

Diesel oil is formulated with a additive package to combat the combustion biproducts of a diesel engine. Oil that is certified for gasoline engines has a completly different additive package to neutralize and capture the biproducts of a gasoline engine and most diesel oils do NOT meet the warenty requirements of of the manufactures of gasoline engines. ther are some synthetic oils that meet both standards and they are so marked on the container. I guese this could qualify as an oil debate. but do you realy think urban legend or family/ internet info is more reliable than what is recomended by the factery?

Smokersteve

Mobil 1 has that gas rating.





For the eco boost. Stick with 0w-30 or 5w-30.


With the way that some of these internals are built, having the 0w-30 or 5w-30 is better for the engine than the 10w-30.
2 examples, the turbo and the cam adjusters will get the oil that they need faster at start up and durring cold operation.
There are a few other components that want oil fast.


I have the 5.0L and I will be using 0w-20 untill I get to 150,000 miles and I will then switch to 0w-30.

aguyintx

I just made the first oil change in my 2013 Eco Boost. Since the truck's system was set at 100% on oil, I figured that the factory installed synthetic. Wrong! It was just standard 5W-30, and black. I was really pissed, as I have always changed standard oil at 3,000 miles. Why would Ford tell you to run a standard oil 10,000 miles? Anyway, I replaced it with Pennzoil Ultra Platinum 5W-30 synthetic with the appropriate Pennzoil filter. To my surprise, the engine is running much quieter than before. Anyone have a opinion for this happening???

modru2004

factory ecoboost oil is 5w-30 semi synthetic motorcraft. looking nasty at 3000 miles is no shock to me fuel dilution is normal on ecoboosts because of direct injection, at least thats what everyone keeps saying. but id like to point out that just because the oil looks dirty doesn't mean its not doing its job or its somehow bad.

zx12-iowa

Rotella is the shiznit . Many racers use this in many applications with great results. I wouldn't shy away from it and your theory is totally unproven marketing hoopla. Like top tier gas...