In my f150 it was amsoil signature series 0w-20w with amsoil oil filter.....now in the STA I run the MC oil and filter....

 

Soooo, the STA doesn't rate the good stuff!

 

Soon it will......just waiting for the miles to rack up until the next oil change.....the garage princess doesn't get driven hardly at all during the week.....

 

Just kidding, I actually think the MC does the job just fine.

 

As do I.....

 

That's cuz it does.

 

2v's need the thinner oil for the cam bearings. I have seen more than a few with the cam bearings wiped out. The 3v guys should really start weighting them up to a minimum of 5/30. You need the pressure for those cam phasers. 3 years ago with my buddies 05 5.4 the cam phasers were making a lot of noise at 70,000 miles. Truck is still running on the original cam phasers at 170,000 miles. They are still quiet.

 

My 05 has 134,500 on it and has never seen anything but 5-20. Barely moves on the stick in 4500 miles and no noise other than a little injector noise.

 

I used Penzoil exclusively in my 1990 Mazda B2200. Bought the truck new, kept driving it even after it was flooded by hurricane Ivan back in 2004, and finally sold it a few months ago with 250,000 miles on it because the transmission synchros finally died due to salt water intrusion.
I think oil change interval is more important than oil brand.
Just my $.02 . . .
Cheers,
Matt

 

Then don't waste your money on high priced synthetic oil. Use the Motorcraft 5w20 semi-synthetic and Motorcraft filter. Walmart carries both.

I use Mobil 1 EP and a M1 filter, and change it once a year or 10k, whichever occurs first.

 

That's what I run in my truck, and I change it every 3000 miles or one time a year.
Sometimes I don't put 3000 on in a year.

 

Mobil 1 Full Synthetic with Motorcraft oil filter since the first oil change. I only put about 1,000 miles a year on it so I only change the oil once a year. When it comes out it is almost as clean as when it went in. Engine is quite as can be knock on wood.

The last time I changed it I bought the extended performance because it was on sale for cheaper than the standard 5W-20 Mobil 1....

 

Couldn't pay me to use Mobil 1, since SOME of their oil failed spec testing a few years ago. I won't chance it.

 

And I thought I was doing overkill!

 

moble 1 5W-20 full synthetic with a motorcraft filter unless the there are those moble 1 sales goin on 5 quarts of oil and filter for 30$ isnt bad....and i change it every 5k