[This review was collected as part of a promotion.] I've used Pennzoil Conventional Oil in most of my vehicles for years. No better conventional oil exists. The only vehicles that didn't use Pennzoil Conventional in my garage were the ones that I converted to full synthetic.

[This review was collected as part of a promotion.] My van has over 235,000 miles and this is the only oil I have ever used....however I just saw the bottle to the left of this one that says high milage....maybe time to switch oil....not the brand...the product....

[This review was collected as part of a promotion.] Iv'e used Pennzoil all my life I can also tell that this product keeps the internal parts of the engine Clean . I know this because I have replaced valve cover gaskets on high millage engines that have nothing but Pennzoil used in them.

[This review was collected as part of a promotion.] My father only uses pennzoil and it is all I have ever used. My truck Has 200,000 miles and the engine still runs like new. The truck maybe rusting and falling apart but my engine still has its power and punch.

I have used conventional Pennzoil for years and currently have one vehicle with 260,000 + miles and one that pulls a 30 ft, 10,500 lbs 5th wheel with 155,000 miles on it. I have never had an oil related problem on ANY of my vehicles (current or past) with Pennzoil in use. When I had to do intake gaskets on the vehicle with 260+ on it because of a coolant leak, the lifter valley and inside the engine was crystal clean. Neither vehicle uses any oil between 3000 mile changes or has any sign of exhaust smoke. I will remain to be a loyal customer as long as you make a superb product.

[This review was collected as part of a promotion.] I bought this product by mistake in a store but since it was open I had to use it. Needless to say I continued to use Pennzoil products only in my vehicle!!! Thanks for keeping me safe on the road!!!!

[This review was collected as part of a promotion.] My grandfather would only use Pennzoil and he never had a problem ever with Pennzoil. I took his advise when he told me Pennzoil was the best,I,m almost 40 years old and I have never had a problem with it and I own quite a collection of cars trucks motorcycle atvs 4 drag cars and heavy equipment 6 lawn mowers and generators.and I only trust 1 oil. And I wanna take this chance to THANK EVERYONE AT PENNZOIL for all your hard work and AWESOME PRODUCTS. And may you all have a very MERRY CHRISTMAS and GOD BLESS YOU ALL!!!

I just got my first car and my dad told me "I told your brother and sister what i'am about to tell you, you ONLY use Pennzoil for your car" he says he believe it's the only brand that will work is Pennzoil I've never seen him use anything eels our garage is has all Pennzoil bottles! and I believe him because it's the only thing I use. I know my dad could give a more detailed review on your amazing product, but I'm hoping to surprise the family! Best product out there! My whole family is TEAM JOEY LOGANO

[This review was collected as part of a promotion.] Ever since I started using it in my truck, the truck has performed better and it seems to last longer than other oils I've run in it. Used to just run around the Air Force Base, and now living in Florida, it still seems to out last others.

[This review was collected as part of a promotion.] I have a vehicle that went over 300,000 miles on conventional 10W40 Pennzoil before needing internal repair (not lubrication related). The crankshaft measured out at near perfect factory dimensions, and there was virtually no internal dirtiness. Saw similar results to this in several other engines at tear down after anywhere from 100,000 to over 400,000. No other oil has proven as reliable.