[This review was collected as part of a promotion.] This full synthetic oil is just like the Review Title says, "Super slick!" My engine runs really smooth with this oil. Obvious benefits of friction reduction of engine components have resulted in a boost in fuel economy. Granted, I don't have a physical/measurement comparison, since I have not taken my engine apart to do so, I'm confident it's doing what it's supposed to do.

[This review was collected as part of a promotion.] Pennzoil Full Synthetic oil is the best oil ant the best price. It keeps my engine running smooth and the great anti-wear additives keep things slick and in good shape. Tip: I always give the container a really good mix before putting it in my car because of the separation of the ingredients - that way all the good stuff is together.

[This review was collected as part of a promotion.] This oil lasted longer between oil changes. I also noticed my car drove a bit smoother and feel a lot better overall. I’ll keep using this oil since my car is sounding a lot healthier and I don’t have to change the oil out as often.

[This review was collected as part of a promotion.] I have been using Pennzoil products for 40+ years without an oil related engine failure. Pennzoil Full Synthetic Oil has kept my vehicles running smooth. This is a good quality oil at a good price. Highly recommend

[This review was collected as part of a promotion.] This is my favorite oil. It out preforms all the other oil brands in my book. If you don’t get your oil changed every 3,000 miles this oil will help keep your car moving. It’s just the best in my book.

[This review was collected as part of a promotion.] I have a late model GMC Yukon XL. Runs great but burns oil more than it used to. I like keeping this around to top off every now and then. Full Synthetic is my choice for extra protection for the high mileage engine.

[This review was collected as part of a promotion.] Pennzoil Full Synthetic oil is the way to go when you want high quality and a reliable product to keep your vehicle in great shape. It is the best oil out there. It is easy to use. The container itself is made where I have no problems with the oil leaking out of the bottle or anything. The oil is clean and I can tell my vehicle runs smoother. It is also great that I can go longer between oil changes with this full synthetic oil.

[This review was collected as part of a promotion.] Pennzoil Full Synthetic motor oil is our favorite for our vehicles. This stuff allows us to go longer between oil changes and it keeps my vehicle functioning at it's top performance. Pennzoil is always our go to brand with motor oil as it's high quality, high performing, and reliable--this product is no different. It worked great, was easy to change oil with and my vehicle performs at it's best. Highly recommend

[This review was collected as part of a promotion.] I use the Pennzoil Full Synthetic on my Chrysler Town and Country. It’s the only oil I would ever put in my vehicles. It’s the perfect consistency. Pennzoil Full Synthetic Helps me get the most out of mileage for my car. It keeps my van running great and clean with no issues. I can go a lot of miles before I have to do an oil change. I also noticed my car doesn’t burn the oil like it used to with non synthetic. I highly recommend Pennzoil Full Synthetic for a great quality oil.

[This review was collected as part of a promotion.] I had an oil change using the Pennzoil full synthetic oil and my car seems to run very well. The 5w -20 oil is working to keep my engine clean and protect against friction. I had my mechanic use it and my car runs great.