It would be better to use 5w 30. But because I have the exact same motor in my 2015 as the 2016's I have to use 5w 20 for the warranty. Very strange.

 

I would think a TSB allowing older 6.2 engines to use the new standard of 5W-30 would take care of the warranty issue.....we'll see...

 

In most cases the answer is simple. Manufacturers use the lightest oil they can for average conditions the engine is likely to see. The lighter the oil the higher the gas mileage they can advertise. Almost all modern engines are produced using better alloys and with tighter tolerances than they were years ago. When Ford specifies an oil in the users manual they do not know if the vehicle is going to be sent to Alaska or Florida. Nor do they know if will see its life being used to carry supplies in the bed or be used to constantly pull a heavy trailer. In my case I live in Florida where it gets to the high 90's in the summer and sometimes tow a 6000 lb car trailer and have the AC on. These conditions create more heat and stress on the engine therefore I always go a step up on the weight of oil suggester in the manual. Depending on the vehicle I use either 10w20 or 10w30. Anything with a 5w is best for colder weather

 

The original question was .. why did switch oil grade in the 2016 for the 6.2L engine..? What you stated is true, but did answer the question.

 

So in other words.... "We found out we screwed the pooch with our 5w20 recommendation due to higher mileage failures and excessive wear in SD gas engines. But don't switch your current engine that specifies 5w20 to 5w30 (even though we made no changes to the engines) or you will lose your engine warranty."

Sorry that is a bunch of crap.

 

It actually show the 6.2L and the 6.8L using both 5w20 and 5w30.

 

yes, for different year models..i.e. 2016 switches to 5w30...not sure what you are saying ...but you may want to look at the chart again.

 

Doesn't show the years on that chart. So how could someone go off of it?

 

For an example, I have a 2015 Mazda3 and the owners manual states the following. "Oil recommendation for USA, Canada and Puerto Rico - Use SAE 0W-20 engine oil. 0W-20 is required to achieve optimum fuel economy." " Except USA, Canada and Puerto Rico Use SAE 5W-30." This statement makes no real sense and I use the heavier oil for better engine protection even if I give up maybe 1/2 MPG. As far as warranties go, if you went into a dealer with a problem there is no way they can tell if you are using a slightly different viscosity than the owners manual calls for. As oil is used in an engine is subject to stress and heat which breaks down the viscosity of oils this can happen slowly or quickly due to conditions. It takes sophisticated equipment to produce and determine viscosity and is only useful in testing NEW oil. Oil analysis is sometimes used by fleets to determine the maximum life or change intervals of different oils but is not used to determine viscosity.
Just some things to think about.

 

What I understand is Ford will keep their position for lawsuit in case of engin failure after warranty on previous years !

 

yes it does show the years across the top

 

Sorry was looking at it originally on my phone. Now that I'm on my laptop and I read it better. My apologies.

 

I have a 2011 super duty w/ 6.2 flex fuel. When shifting into reverse, it hesitates, then slams into reverse. Also hesitates between gears while shifting up, mostly lower gears. This doesn't happen all the time but prob 90 % of the time. Talking to other super duty owners (diesel trucks) are noticing the same. Issues seem to have started after having charcoal filter replaced. Any ideas out there? I know this is off topic, but would appreciate all the help I can get. Thanks

 

Thanks for asking yeslekb but our engineers can't answer those types of questions. You might want to check the discussions in the Super Duty thread section since, like you said, other folks have experienced it too and see what they've done to fix it.

 

I have used 5w-30 oil from day one. Mobil 1 extended service oil. Gets hot here in Texas. 342,000 miles,no major issues. Hot shot rig. No blowbye. Ford 820s filters
Have no fear.......