RateItAll: The Opinion Network

This stuff is terrible and contains alot of wax, I used to be fan in my econemy car until it devoloped a nock due to sludge and then switched to castrol and now it seems better.

haha, you guys make me laugh. I use penzoil platinum in my 99 altima, and valve train on these engines are naturally loud, it has kept it quiet for the last 2 years I have been using it, I used to use castrol gtx and syntec blend, and I still like them just as much as a like this oil. I went about 5500 miles on this last change, and it still looked good.

Pennzoil makes terrible motor oil. It causes wax build up, sludge, startup problems, flat tires, and just all car problems in general. DO NOT USE THIS OIL IN YOUR CARS. Instead, please send your unused Pennzoil to me. If you have 5w20 PP, it is more preferred.

There is a lot of good oil info on these forums, please edumacate yourselves:
http://www.bobistheoilguy.com/forums/

A very good brand to use for any type of car. very clean and doesn't create build up.
Pennzoil Platinum is however a very good oil! It keeps everything running nice and smooth. A very clean oil!

this response if to the guy below (goodone-1)

actually if you knew how an engine works, you would realize that the intake valve stems are constantly in oil, and that a very small amount of oil alway seeps past the seal. pennzoil oil has a detergent in it that gums up the engine, and leads to engine failure, its like sludge in a bottle. dont use it. ask any person (including myself) that rebuilds engines for a living, when we take apart the engine and see all the gum/wax whatever you wanna call it, we ask the customer what oil they used... guess what they say. and thats one more person that i helped realize why there engine prematurely died.

i used to use pennzoil in both of my motorcycles and in my first truck, which was a 1984 ford f150 after that truck decided to take a dive i took it apart and there was enough wax to start selling candles now the only thing i use is castrol. the truck i have now which is a 91 f250 runs great even when hauling long distances

best oil i have used does better than opti2 shit as i am a master mechanic for briggs and stratton in kentucky OUR products are manufacted from pennzoil lab test shows it produces less sludge varnish and waxes than any other engine oil in harsh conditions and great conditions so i highly recommend this engine oil

Strong product

I've had wonderful luck with Pennzoil Platinum Synthetic 10W-30 in my '89 Mustang. As someone whose worked in the auto industry, I give it a huge thumbs up for quality and value.

I started to use this oil in my vehicle and it started to smoke! I changed oil brands and it stopped smoking and using oil. I have not had a good impression of this oil.

Nothing wrong with Pennzoil. Quit using it due to higher price is all. Have many trouble free, sludge free, wax free miles from 40+ years of driving and wrenching.

I'm use Pennzoil Platinum 5w30 for more than one year and work very well, specialy in cold weather.

I never had a problem with Pennzoil. It worked wonderfully with my '73 Mustang.
The bad thing is that they got jacked up in price. I remember when they were $1.XX a quart and now it's about $2.89. So now I end up using other oils like Exxon or if I'm really desperate... Coastal.

never had a problem w/ pennzoil

Funny Kidv, that exactly how I recall the group III debate.

People who don't even know how to change their own oil shouldn't be rating motor oils, Pennzoil, Mobil 1 or otherwise. With regular maintenance and use of the proper weight motor oil for the application and season, I'll pour a QT of Pennzoil into my engine as soon as any comer.

"Penzoil is responsible for legitimising the labeling of Group III semi syn as "full synthetic", and don't even forgive them for that!" I thought that occurred when Mobil brought Castrol to court for making claims that Syntec was "synthetic" - group3.?.

This says it all!

Penzoil is at best not harmful. But right now it is highly over rated that's for sure. The wax buildup claim is crap though. You would surely be far better off with Castrol Syntec or Mobil1 Synthetic.

Penzoil is responsible for legitimising the labeling of Group III semi syn as "full synthetic", and don't even forgive them for that!

This is some of the most biased crap that I have ever read with no data to back up clams. Wax build up on intake valves? Intake valves are part of the fuel system. Motor oil does not even touch them. Unless you are putting motor oil in your gas tank. I can see the person who posted that is a real genius. cazzy (0) 01/13/2007 Pennzoil = SHELL OIL Co = guess who. Hint: Rhymes with tush. Shell oil is Dutch Royal Company. Brush up on some facts before you share your opinion. 123qwe (0) 11/08/2005 Pennzoil sucks so bad i could develop an oil right now that is better than it. I know a friend who used their conventional oil twice. During the second run with it he noticed something terribly wrong with the engine. He is also mechanic so he took the engine apart and was shocked to see all of the wax build up in the intake and valves and pistons. We both tell people NEVER to use Pennzoil, its not a suprise I rarely hear anything good about Pennzoil, I hear that the new Platinum is pretty bad too. Yeah that is why it is the best selling motor oil in the United States. bigalnews (0) 07/20/2004 The 10/30 reg. oil breaks down quick. And is very thin, just like water. Do not falllll for the cleaver commercials. Thin how? It is a 30 Weight Motor oil like every other 30 Weight motor oils. greaseygracy I would like to know how you formed your educated opinion. Let me guess you are an mechnanic? I am sure you don't have any idea how an chemical reaction is formed.

The same Penzoil shills, flooding BITOG with raving pro penzoil posts, are also here giving it undeserved high marks. They are over at BITOG, right now, whining about this site too.

Penzoil shills are all over the net pushing their product and advertising the "big penzoil 2fer sale".

Penzoil is at best not harmful. But right now it is highly over rated that's for sure. The wax buildup claim is crap though. You would surely be far better off with Castrol Syntec or Mobil1 Synthetic.

Penzoil is responsible for legitimising the labeling of Group III semi syn as "full synthetic", and don't even forgive them for that!

I rate Pennzoil a 5...........it's a 2 for one product. You get oil, and then, when your engine dies from all the wax buildup, you can make candles. Saves you a heck of a lot in the long run.

Man oh man. Some of you need to educate yourselves before posting. At the least quit utilizing 25 year old "rumors"... Pennzoil is a fine product and works well under most driving conditions and most motors made today. Add packs and basestocks are average and should last the average driver 4-5K oil change intervals no problem. All in all a great value compared to other overpriced oils you can find on the shelf at your local store. I am speaking of the plain jane yellow bottle stuff. Now the Pennzoil Platinum is really a great value and shows excellent wear numbers even when compared to the "Top Shelf" synthetics that are sometimes double the price.

First, off I, Mike, am the REAL ToyotaNSaturn. I love Bob's site and find it one of the most respectable spaces on the 'net.

To whoever the 1st poster was with MY handle at Bob's site, please identify yourself, or at least, your IP address so I can cross reference you.

And by the way, I have TONS of Pennzoil in my stock...Platinum 5w-20, Platinum 10w-30, LongLife 15w-40, SJ Synth 5w-40 (thanks to Johnny!), 5w-20 & 5w-30 dino.... I think it's the simply at the top of the available OTC oils today.

Two thumbs-up to Pennzoil!!!

Two thumbs-down to whoever used my BITOG login name.

I have to rate the people at bob is the oil guy about the lowest of the low. They are a bunch of corporate shills thet push products. Pennzoil is the best of the best product.

XOM, makers of Mobil 1, is based in New Orleans. Is that why dc ignored katrina? My oh my the oil biz is ruthless.

Pennzoil = SHELL OIL Co = guess who.


Hint: Rhymes with tush.

Pennzoil is great!!! I will never use anything else in any of my engines. Even the lawn mower uses Pennzoil, and has ran better since I began its diet of Pennzoil.

Pennzoil has flooded the bob is the oil guy site with shills pushing their garbage. The same jerks have been spreading unsubstantiated rumors dissing Mobil1 too.

Man I hate corporate sellouts.

I'm not particularly a fan of Pennzoil. My dad said his trucks ran like crap on this oil, people complain about buildup, and also some jugs look like they've got elements of something in the oil when you open it new. Now mind you I have heard good things about their Synthetic oil. And an auto dealer I know says the Yellow Bottle Conventional is pretty descent and that they use it in all their cars & motorcyles but that's prob cuz it's cheap ($$$). My mom has had it in her van every prob 1 out of 3 oil changes becuase we take it wherever to have the oil changed becuase its hard to change due to spoiler & running boards, the engine still runs well after 9 years so it must work to a legal standards well, but over and above other oils I somehow doubt. I would rather use it if I had to choose between cheap crap like Nugold or the Walmart Tech 2000 or other low priced oils if I was in a pinch. But as far as I'm concerned Pennzoil will never touch my engine. [Biggest thing is O&F-5kmOr3m]

Very simple terrible oil-that sums it up

Well I will take you word for it that it's bad...but used to run this in my cars and maybe I was just luckey that my honda went 150K miles and was still running ok when I sold it. I still going to rate it ok since in my esperience nothing bad happened, but then again was it luck?

Pennzoil sucks so bad i could develop an oil right now that is better than it. I know a friend who used their conventional oil twice. During the second run with it he noticed something terribly wrong with the engine. He is also mechanic so he took the engine apart and was shocked to see all of the wax build up in the intake and valves and pistons. We both tell people NEVER to use Pennzoil, its not a suprise I rarely hear anything good about Pennzoil, I hear that the new Platinum is pretty bad too.

The 10/30 reg. oil breaks down quick. And is very thin, just like water. Do not falllll for the cleaver commercials.

dont use pennzoil, it destroyed my motor, there was so much waxy buildup in the motor that it cloged the oil pump and oil starved the motor. when I pulled the intake off I could not see the cam due to the sluge. I wouldent use this oil if you paid me to.

I only use Pennzoil. I have a 1989 Dodge Spirit with 255621 miles, 1993 Dodge Grand Caravan 241523 miles, 1985 Toyota Pickup 263200 miles, 1977 Chevy Suburban 123799, 1983 Lincoln Mark VI 112900 miles. Looks like Pennzoils works great. I had to replace the head gasket on the dodge spirit at 200K and found no evidence of any type of buildup. If an engine does have build up, then it was not serviced properly.

Pennzoil' s syntheic oil beats Mobil 1's in all areas; viscostiy, pour point and flash point-and Mobil 1 is probably the best there is besides the hard to find Amsiol! So Pennzoils synthetic oil makes up for it's poor conventional oil. UNLESS you're brave enough to use MOBIL 1's 0W-40 which comes in with the best numbers I've ever seen even in pourability! It sounds like the perfect oil!

I believe oil is pretty much oil anyway you look at it. If you are changing the oil in your car every 3-4 months or 3000 miles which ever comes first you are doing alright. I do believe some oil's might be better than others, but it isn't going to matter to much, they will all protect the engine in the way it needs to be protected, and even better if it's fresh clean oil..

Pennzoil or as it should be known pennzwax, is the worst oil for buildup in a motor and can cause enough damage over a life time that you refuse to rebuild a motor that was considered a penn motor.