Pennzoil 550020166-6PK Ultra 5W-30 Full Synthetic Motor Oil - 1 Quart (Pack of 6)

This is my Holy Grail oil for my IS300. This is a great product at a better price then most and I just love how it works with my car. I don't expect any horsepower gains but it makes the engine smoother and revs much better than normal conventional oils. I've heard Pennzoil has a lot of experience in oil making and I can see that with this oil.

This product is way overpriced. I can get it at WallMart for 30% cheeper!! The only reason I bought it from Amazon is I was away from a WallMart for about a week.

Good oil, unfortunately for my application it's not up to the task. I got 3 - 5 qt jugs when they were only $28 each earlier this year - with the Pennzoil rebate I was able to get the jugs for under $20 which was a steal. Now that they have changed the appearance of the bottles to the yellow ones the price has jumped up significantly. In the 5w-30 flavor 6 quarts is $54 dollars now which is equal to the the price of a few boutique oils. This is being used in a 17 WRX STI which is notorious for being hard on oil in addition to being a oil burner; the last oil analysis had a TBN of 5.2 @ 4,100 miles which is great; but the oil sheared down to a 20 weight oil (cSt @ 100 c = 8.94) also once I've reached 3,000 miles on a given oil change with this oil I've burned .5 qt's. Due to price increase it will give me a reason to switch to a more stout oil like Motul X-clean 5w-30 FE - for the increase of roughly $15 I'll be willing to pay to make the switch.

Pennzoil Pure Base is the best passenger car motor oil available. I only wonder why in the world doesn't Pennzoil claim the ACEA A5 spec, which is "self-reported", meaning it's not a pay-to-play label like European car mfgs whose royalty is $500k for 3 years. People know ACEA A3 from Euro cars speced for VW 502 etc et al, but A5 spec is just as "good", only thinner. Well, unless you are driving on the Autobahn or Nurburgring, you are unlikely to overheat your oil and need the extra visc of a 40 weight. More likely you are cold starting it in the Midwest and driving 2 miles short trip to pick up kids, smokes and lottery tickets....not even reaching full operating temp! I admit I use 5w-30 in my Audi turbo in winter, it's thinner than 0w-40 in cold and simply works better. 5w-40 is insanely thick in cold, so good luck with that unless you want to think about it....back before auto mfg were required to spec only a single grade of oil for mpg regulations...

I love this oil, used on my 2016 WRX since first oil change, but why r they jack up the price to $37? It used to be like $27/5 gallon. Will wait for it to go down and get Like couple jugs in case they increase the price AGAIN.

Great price for highest-grade oil, but the bottle was leaking a bit and left half a quart on the floor of my truck by the time I got around to using it.

All three gallon jug seals were open and two were missing about 1 quart of oil each.

Penzoil Ultra is currently the Top 5 best oils on the market!! It's better than Mobil 1 EP (Proven better additives & Reduced Temperatures) I was using Castol Titanium Full syn before & when i changed to this oil my car felt so much better. I'm Getting Active 3-5 MPG's better over factory conventional. Acceleration feels much better and my temps have been reduced as much as 25-30 degrees on the track.