scottmach

5w-50 shears rather quickly, especially the sub par motorcraft. I wouldn't use it as well. On SVT Performance we have a thread going where everyone shares their oil analysis reports and 5w-50 has proven to not be a very good choice.

scottmach

I hardly doubt you have anything to share other than a condescending attitude. The minute you posted you changed your oil at 600 miles my mind was made up. As well as many others.

jz78817

thing is, you think Ford wasn't aware of how that oil behaves when they specified it for the track pack? Before something goes into production, they run multiple engines- both on the dyno and in cars- for the equivalent of millions of miles (in total, not per engine.) It's a very safe bet that they also know how to do oil analysis on these engines, and are well aware that the 5w-50 shears down to a lower viscosity. I'd wager they selected 5w-50 because it shears down; the engine is minimally different from the non-Track Pack version which takes 5w-20.

You (and people on other forums) look at this stuff in a vacuum; you see the viscosity dropping and assume that's a bad thing. The engine is a system, all of the parts (including fluids) have to work together.

scottmach

Do you think they were aware of all the problems with the MT82 before they released it? Do you think Ford makes mistakes?

And you're way off base in your thinking of the way view it. With careful thought and oil analysis tests I came to the conclusion Amsoil 10W-30 was what would work best for me.

jz78817

If something turns out to be non-optimal or causes problems in the field, it gets changed. Case in point, the MT-82 launched using 75w-90 gear oil, but it had problems being too thick in cold temps which made it hard to shift. So they put out a TSB in mid. 2011 to change over to the Dual Clutch transmission oil which fixed that issue (I just had it done on my car, the difference is amazing.)

OTOH, the Track Pack originally came with the same 5w-20 as the standard 5.0, but the Boss 302 used 5w-50 and the Track Pack followed suit in MY13. So they saw some need to change to 5w-50.

sure, but that doesn't mean everything you see that works differently than you expect is a mistake. Like I said, Ford changed to 5w-50 on the track pack.

what in the oil analysis led you to that conclusion?

scottmach

A good read.
http://www.svtperformance.com/forums...ghlight=amsoil

Slowbra302

This is more or less what I was referencing.

I wasn't trying to start this huge argument I was stating why I went with a different weight and brand. As for my justifications, it might have not heated up faster (seems to as my car is garage kept and now before I get off base I get in the normal range as before with 5w-50 it would take another 2 miles obff base to get there), why I went with a 30 weight is I don't track the car (if someone could actually legitimately justify the need to run a non shearing 50 weight I will go back, unfortunately I fell it is a marketing gimic like the air vent filter), lastly it was my understanding that you don't want unecessary oil pressure. I am still learning all about cars and motors how they behave so I will keep my mouth shut as I have very little knowledge here.

Not meant to have a flame war, just trying to post stuff that might help someone out! Since the switch, way less noise coming from the engine bay area!

PeteInFlorida

Scotmach, when I posted that comment, it definitely was not directed at you. It was directed at JZ78817.
I actually agree with your comments, along with Slowbra302.
Forums are designed for sharing information and ideas, but lots of people enjoy trolling forums with the intent to disrupt intelligent facts and ideas. Too bad for that, because those folks will never learn anything constructive from more experienced people.

PeteInFlorida

Actually, I did not insult you. I just stated that you have a lot to learn. If you don't open your mind to information, you will always remain the same as you are....

Because this thread is branching off into space, I am done saying what needs to be said. Don't change you oil, it bothers me not.

scottmach

Understood. Let's all move past it then.