just wondering why everybody bashes it when its made by Shell just like the rotella we all use.

 

Pennzoil isn't bad.....here is some real data in which Dallas based trucking company Stevens Transport used the Pennzoil 15W-40 in extended service.

 

You ask whats wrong with Penzoil?.... They sponsor Kevin "the cry baby" Harvick!!.. hahaha..JK!

 

Nothings wrong with it. Just not as popular on these boards as others.

 

If You Want Tar Based Biuld Ups In Your Engine Then Use It ..
Try Valvoline

 

You have proof of that? Please provide a link that proves that one API certified oil promotes sludge moreso than other oils.

 

Pennzoil is a paraffin based oil and while I have nothing against Pennzoil, I will NEVER use a wax based oil which is what Pennzoil is!

 

Amen. It seems to me that Pennzoil is the only oil that you hear of this sort of thing. When I hear of a long time user pulling off a valve cover and finding HUGE build up, its enough for me not to take a chance. In Pennzoil's defense, that motor had tons of miles on it, although it was pre '80s tight tolerances.

JRG

 

Well it is the age old battle with pennzoil!!

I know back when I was more up on the refineries and things of the sort PENN oil refineries were about 10-15 years ahead of everyone else. They had some of the best additives for there oil. In the old days they did have some pretty bad oil and you would pop off valve covers and find that cacky sludge build up that people talk about. But they say the new oils are much different!

Like an old time mechanic told me if it makes you feel better to use a specefic brand knock your socks off and use it. Just as long as you change it regular and keep a good oil filter in there the motor is going to last just that simple. Now there are oils that offer some benefits out there because of the additives they put in but to each there own. Just change it often and you will be fine.

I worked for Caterpillar for years and we never had a problem with Rotella, Delo 15w-40 or Mystic 15w-50 and these engines were always pushed to far and always in the most nasty conditions possible!

 

Good gravy.....paraffin based doesn't equate to wax.

One of the well respected HDEO oil lines out there is Schaeffer's. Their Supreme 7000 series 15W-40 uses a paraffin based base stock along with a Group III hydrocracked base stock (semi syn).

Before you start to talk out of the side of your mouth, you may want to take a peek at the thousands of UOA's that Schaeffer's has in diesel pickups and OTR trucks. Schaeffer's is well known for its' properly formulated oils and the stellar UOA's that they produce.

Here are some Schaeffer's UOA's in heavy duty applications for ya'll to look at, just in case you don't believe me.

 

Well you know how it goes!!! Some people will never change there thinking!

 

As long as you use the correct weight and api cert is doesnt matter on brand it you keep it changed. We have a small fleet of F150's that have had nothing but Pennzoil in them and changed at 3-5k miles. Some of the trucks are over 300k and never had a valve cover/oil pan off of them.

 

Yeap keeping it changed is the main thing!!

 

I agree 100% that if you keep most any oil changed/filtered you will be fine.

As I see it though, once a company has a reputation for less than stellar conditions, there is FAR too many other quality choices out there.

JRG

 

Yeap and if it makes a person feel better by running a certain type then by all means knock yourself out!!