Pennzoil Platinum 5W-20 Motor Oil, 5 qt.

I've been using it for several years. But it has been out of stock for a long time. You can only buy small bottles, which increases the cost. As a result, I am now considering switching to other brands of products.I hope to speed up the processing of the out-of-stock problem.

I used to buy quaker state but when i did a teardown and rebuild of my dodge ram engine i found a lot of oil sludge at the bottom a friend suggested Pennzoil which I tried and when I re did my engine there was no sludge the journeys and components were completely scoured clean and there was zero wear on bearings and pistons I'm amazed Now I only use Pennzoil in all my gasoline and diesel engines

I've changed my own oil now for near 30 years. I've never been let down by Pennzoil. I've tried using the competition in a silver bottle but it made my vehicle engines sound very loud. While I can understand it's protection may be on par to Pennzoil I could do without the valve clatter, so I went back to the tried true and trusted Pennzoil. I won't bother changing to other brands anymore.

I use Pennzoil Platinum 0W-20 in my 2014 Chevrolet Malibu 2.5L. I personally love the science behind the oil, like it being created from natural gas and that Pennzoil offsets 100% of the carbon emissions from creating the oil. Keep it up Pennzoil/Shell. I love your products, whether it's oil or gasoline. Just make sure you shake the oil VERY well before putting it in your car because the additive package falls to the bottom of the container after a while, and obviously you want that going in the car. It'll look like a sandy type material on the bottom of the container. *Quick note to consumers, ensure your oil filters bypass PSI for the bypass valve is correct for your particular engine. Mobil told me their filters were compatible with my car, but after some research it turned out that was completely wrong and GM specifically says that it is not because Mobil has PSI of 12-15 and GM says my engine requires a bypass PSI of 22. Don't trust all manufacturers to know what they are talking about.

Bought a 2002 Pontiac Bonneville with 204k and against my better judgement put a full synthetic high mileage oil in it. The car had some noisy lifters and the cam was disgusting. As anyone should know, a good oil gets "dirty" quick as it is suspending all of the impurities, after my first oil change I noticed my oil was pretty dark and my engine (3800 S2) was running really smooth and there seemed to be a lot less sludge built up around the cam. I would highly recommend this oil for someone looking to make the switch from a conventional or syn. blend. (pair this with the HPZ filter and you are guaranteed a long lasting oil)