If Pennzoil is one of the best, why is it so cheap

[rastoma]

I didn't say it's THE best, I said one of the best. And I base that on the number of people in this forum who use it and report how well it cleans an engine.

I should have mentioned too, I'm only interested in dino oil for now so comparing this to Amsoil is like apples and oranges I know. I'm only talking about dino oil... sorry for not mentioning that.

 

[Gary Allan]

It tends to be a decent value based on price. For the longest time it was not much more than conventional. Would you buy it @ $5.99-$6.99/quart? Probably not, but most likely you're not looking for $6-$7/quart product anyway. ..but for $4+/- ?? Sure, you'll use it.

 

[G35_TX]

Originally Posted By: JohnBrowning
Seriously how many people are asleep at the wheel look at it's number's look at independent lab test's conducted for Amsoil. It is not even close to the best it is not even close to M1 which consistently comes in second place for the last 20 years to Amsoil!Wake up people it is one thing to lie tot he mass's quite another to lie to yourself or to believe a lie!


Umm PP is better than M1 is most tests of today. Don't even try to say M1 is the best or 2nd place. LOL!

I personally stopped using M1 when they changed their formulation many years ago for the worse.

 

[ARCOgraphite]

Originally Posted By: Onmo'Eegusee
Originally Posted By: mechanicx
I thought I saw somewhere that SM had to give less valvetrain wear and perform better in several areas over SL?

It does.
The test sequence allows the cam to be completely worn through the nitriding at 4 mils deep average. That is a shot cam. Its a worthless wear spec. Now when they allow SL was on the down slide for EP AW add. What we get with GF4 is improved basestocks.

 

[ARCOgraphite]

There is no comparison to a good HDEO cj4 v. any 5w-30 SM/GF4 for std interval OC. The HDEO are in another class - and the only thing suitable for near-severe service IMO.

 

[Gary Allan]

Well, you should know. Are you part of SWRI's field testing unit?

 

[[RT] ProjUltraZ]

independent tests? what about all the high Fe M1 UOAs? i can't recall seeing even 1 high iron PP UOA

 

[ARCOgraphite]

Originally Posted By: Gary Allan
Well, you should know. Are you part of SWRI's field testing unit?

Now with the engine saved, the transaxle is failing ...

 

[edwardh1]

The real question is
if you have say a 1999 car, does ANY "modern" 2009 oil even the cheapest, provide more protection than a "premium" oil in 1999?

Dino oils that is.