I plan on still using the Motor craft filters too as they are made well for the money. I am also switching 2 other vehicles to the 5w30 PUP that we own. This will make it more cost effective as a whole and Shell Tech said the 5w30 would be good for the o9' crv, and my sons 01'ranger is a 3.0 that will get it also.

 

^^ What he said.. ask any VW/Audi owner how the 1.8T engine handles a heavier oil. the Cam followers tolerance was so tight it would properly lubricate with thicker oil, causing hot spots resulting in oil sludge. just google 1.8T oil sludge issue. It was a poor design, obviously. But its more than just "for fuel mileage", how many folks on here are engineers that work on engine design and lubrication needs? Bueller.... Bueller.... I'll stick with what Ford recommends, can they get it wrong? Yes, but they have the R&D, education and experience to make a call on that better than anyone on this forum save a handful of folks.

 

Actually, it's not true. Engine builders have already stated that "thicker" oil flows perfectly fine in the Ford engine, and as has already been mentioned Ford specs 5W50 on the 5.0L in the Mustang with the track package because they know that when the engine is going to be worked hard, it needs better oil. What you should be worried about is running the engine on a hot summer day with a load on it and thin oil being sheared apart chemically by the hot mechanical contact of moving parts.

The fact that engineers at Ford have degrees in engine design means nothing. At the end of the day they are employed by bean counters who are not powertrain engineers and only care about meeting CAFE standards and saving the company money, while putting out a product that makes it through warranty period.

Sure, 5W20 works great for some guys, but that doesn't mean 5W30 or 5W40 wouldn't work better.

 

Just google CAFE standards, this goes all the way back to 1975, and has been revised to make the determinations of a vehicles "footPrint" more understandable. This is why we are seeing more plastic, Aluminum (f150),composites, and yes low viscosity oils. The pressure of the standards set are going to continue to give you the wonderful features like stop/start at red lights etc., The CAFE standards are to reduce fuel and oil consumption of all auto makers fleets. Yes SAE 16 oils are the bottom of the scale 20 weights that are now coming and eventually even thinner oils with green packages so to speak. Yes these oils are engineered to perform and hold up to meet a certain protection standard, and that does not make them Bad, but they are engineered because of the pressure from the CAFE standards to save energy, (FUEL and OIL) plain and simple. I never said 20 was bad for my truck, just that I think from what I am doing with my truck and the hotter climate I feel 30 will protect my truck a little better in the heat of the summer. If I was going to run a 20 it would now be full synthetic. No winners or losers here, just preference by use. And the 30w's were used in a lot of vehicles that are now specd for the 20 just for this reason.

 

Old thread I know.

Good reading.

Makes me more comfortable when I start running the cases of Miles synthetic blend 5W-30 that I have.

~5-6k intervals.

Light boat and ATV trailers.

Oz Omega tune. 93 octane. Heavy right foot.

 

Yes older thread, but still very relevant. I have never been a fan of 5w-20 since ford introduced it in 2001. I’ve had two 4.6 mustang motors (97 2v and 04 2v). The 97 specs 5w-30. The 04 magically specs 5w-20. Guess which one it gets?

 

This is America, use whatever you want but don't confuse the 5.2L Aluminator with a flat plane crank requiring 5W50 oil with having much to do with the 5.0 Coyote. Very different engines.

 

I switched over to 5W30 at 100,000 miles on my 2011 5.0. I sure hope I have created enough tolerances to flow it.
Bwhahaha

Audi specifies 5w40 in my 2017 Audi 2.0 turbo.

 

Always a good discussion.

Especially on Bob is the oil guy forum.

 

He's referring to the track pack 5.0 in the mustang gt that can run 5w-50 when used for track use.