Bob,
I have always been of the opinion that as long as the container says
"Pennsylvania Grade" that it is good. The other grade is Texas grade.
It has to do with the base of the oil. One is paraffin based and the
other is asphalt based and I think the Pennsylvania grade is paraffin,
but it has been too many years since I learned all this.
The oils that fall into that grade are: Pennzoil, Castrol, Kendall,
Quaker State, and a host of others.
Of course, synthetic lubricants don't apply.
Now, having said all that, I open the floor for dissenting opinions. ( I
have just gone to the closet and taken out my NoMex flame suit.
Joe Curry
Bob Jones wrote:
>
> Folks:
> Although we had an extended discussion not long age about the right oil
> for our carburettors and the best oil filters, I can't remember a decent
> discussion on the best oil; brand and viscosity. Most TR folks I know
> use Castrol 20W-50 but years ago when Rick Cline was winning national
> championships with Triumphs and I was one of the hanger-ons, we used
> Kendall. Maybe it was a sponsorship thing? Anyway what got me thinking
> about this was a '93 GMC van I bought recently. As soon as I got it I
> changed the oil. As I had a couple of cases of 20W-50 around for the
> TR, thats what I used. Later as I was reading the manual on the van I
> found they recommended 5W-30 for the 5.7 litre engine. As my initial
> gas milage was sorry, around 10 mpg with the car trailer hooked up and
> 13 without, I started looking for some improvement. Now before I go any
> farther let me answer the obvious: Yes I knew the milage would be
> terrible before I bought it, but not quite this bad. I changed the
> oxygen sensor and did a little tuning which helped. I also changed to
> the recommeded oil and guess what, milage went up to 15. At the current
> 93 cents a gallon that we have here I can live with that, especially
> since I don't use it as the everyday car. But back to the real subject,
> what is the best oil and viscosity for our cars? Castrol, Mobil 1,
> Redline, Any Old Brand, 20W50, 10W-30, 5W-30?
> Let the great debate begin.
> Bob
--
"If you can't excel with talent, triumph with effort."
-- Dave Weinbaum in National Enquirer
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