Oil suggestions?

[BigRed427]

I have a 427 FE and use 20W50 w/a Motorcraft filter

[DAVID GAGNARD]

Rowtella T 15/40 is hard to beat, been using it exclusively in everything I own from the garden tiller and riding mower up to my F-250, wife's car, daughter's car, 65 Fastback, and my company car (Toyota)........ for about 15 years now!!!!!!!!!!!!!!!!!!!!!!!!

BTW: as of today the Toyota has a tad over 352,500 trouble free miles on it and other than the oil in the motor when shipped from Toyota, it has had nothing but Shell Rotella T 15/40 in it with oil/oil filter changes every 4,000 miles..................

David

[CSX 4027]

It used to be good but the formula has now changed. You won't hear the same touting going forward

Originally Posted by DAVID GAGNARD

Rowtella T 15/40 is hard to beat, been using it exclusively in everything I own from the garden tiller and riding mower up to my F-250, wife's car, daughter's car, 65 Fastback, and my company car (Toyota)........ for about 15 years now!!!!!!!!!!!!!!!!!!!!!!!!

BTW: as of today the Toyota has a tad over 352,500 trouble free miles on it and other than the oil in the motor when shipped from Toyota, it has had nothing but Shell Rotella T 15/40 in it with oil/oil filter changes every 4,000 miles..................

David

[DAVID GAGNARD]

Steve;
they may have changed the formula, but so far it works for me...... I don't think I have ever gotten rid of a vehicle with less than 100,000 miles on it and have not had any problems with any vehicles I've had, so far, knock on wood.......

As long as I get the mileage out of my vehicles like I have been getting without any engine problems, I'll stick with Rowtella T........

I also use it for the break-in/dyno of my race motor, then afterwards switch to 20/50 Mobil 1 synthetic.......The Mobil 1 holds up a lot better to the high oil temp I see in the race motor........

David

[ENTDOC]

http://www.lnengineering.com/oil.html

[CSX 4027]

Originally Posted by ENTDOC

http://www.lnengineering.com/oil.html

Great link........Thanks for posting it

[ENTDOC]

it is one of the few seemingly unbiased reports I have seen

[CSX 4027]

For street vehicles like your 250 etc etc, it will be fine regardless of the formula change.
We did see a change in lifters that came out of a race motor with the newer formula.
I personally wouldn't use the new formula for anything high performance solid lifter.
Mobil 1 has also gone thru many changes.
For racing it was good, then it was bad, then it was good again. I haven't been using it except in my Lightning Motor truck and have had 25,000 flawless miles so, I guess it's good in that application.

[Power Surge]

Thanks for all the suggestions. I went with the Rotella T. Ironically, I've used it for years in my powerstrokes, but it never dawned on me to use it in anything else.

I understand Steve's point of the different formula, but my motor is far from requiring anything like Steve is used to. It's just a mild, all iron, hydraulic lifter FE.

My main reason behind the question was to see what weight people were using in the hot months.