[This review was collected as part of a promotion.] i have a high mileage Citroen dispatch 2.0 hdi that is 12 years old now & currently do 1000 miles per week, and since using this oil knocking noises on start up have stopped and fuel economy has increased, so I'll be using it again in the new year, when I'm due my next oil change

[This review was collected as part of a promotion.] My father is the owner/curator of a historic auto racing museum in Pawtucket Rhode Island. Not only am I his son, but I am a volunteer at the museum. When we go to races, car shows, and events all over the north east, we have an old Snap On Tools truck that was painted, gutted, and set up to be a museum on wheels. We cannot fit all 8000 square feet of museum artifacts in this truck, but we put different things on the walls and display cases that coinside with whatever race or event we were invited to, and people walk through the truck starting at the back, and exit out the front..This truck gets MANY miles put on it between the months of March and October, and Penzoils High Mileage oil is perfect to keep this truck running each and every race season...It would be absolutely amazing to win this toolbox and add it to the museums collection of priceless artifacts..We are a non profit organization, and if you would be interested and we were chose to receive this awesome gift, we would also be interested in working with Penzoil to promote racing history and at the same time we can promote Penzoil at the many shows we attend..Thank you, and from all of us at the Pronyne Motorsports Museum, Merry Christmas!!!

Switched at 170K to Pennzoil 5W-30 High Mileage... 1) Up until 168K I had been using Pennzoil or Castrol synthetics. 2) I just changed at Toyota: - plugs - coils - plenum gasket - valve cover gaskets - front VVT solenoid - coolant NOTE: Pictures of front valve-train show differential heating/drain-back of oil. Right-hand side to left (towards timing gear) the color is "med-amber" to "brown," no sludge, but some "crusting"; above average in cleanliness, BUT what appears to be a design error in even oil flow. First highway trip after work by Toyota dealer engine used 3qt of Castrol 5W-30syn in 700mi. Stuck ring?! (Note: most it ever burned was 0.5-1.2qt synthetic in 3,000-3,500mi; have owned the little truck since 48K) Post atypical oil consumption: 3) Put in Castrol 10W-60 syn...NO oil loss on road trip of 900mi. ZERO loss. 4) Followed with 4:1 Pennzoil 5W-30 High Mileage + Marvelous Mystery Oil. (rolled around town for 1 week to clean out engine --first time) 6) Changed oil to correct weight & filter (Penn 5W-30 High Mileage + Toyota factory filter as usual) 7) Second road-trip to same destination, 900mi...ZERO oil consumption. NOTE: Toyota mechanic and I know the engine design and sludge problems associated with this engine class. My oil change interval since purchasing has always been 2,500-3,500mi. plus I change the coolant per the recommended time/mileage. Main engine seals replaced at 90K with timing belt. (Did not replace valve guide seals.) MY MECHANIC (former NASCAR Master Tech, now with Toyoda'r, recommended switching to conventional high-mileage oil to see it is would solve the recent consumption. Switching to Pennzoil appears to have done just that --no consumption. CAUTION: I have been told that once you switch to high-mileage oils to never switch to non-high-mileage oils. Apparently the oil seals once they "swell" need the additives to maintain that state. Heck...Pennzoil High Mileage seems to work and it is totally inexpensive! The Toyota oil filters are good for 7,500mi. I think I will just drop the oil every 2,000-2,500 at the local outdoor place before changing the filter at the 5K mark. I am off the extreme long life of keeping my precious Red Line ester-based OR Pennzoil Ultimate synthetic oil in the pan for some extend period (which for me was 4K/oil change). ---I am just going to do the OCD guy-thing and change my oil every 2,000 with this Pennzoil. Why not?!! -David in NC 3/2016

[This review was collected as part of a promotion.] I started running the Pennzoil High Milage several oil changes ago And almost immediately could tell a difference in how much smoother my 85 Chevy 350 was running. This truck was my everyday work truck for many years. It was worked hard everyday pulling a trailer loaded with equipment and that took its tole on my engine. After retiring the truck I kept it to restore and keep in the family. This has brought my oil pressure up almost 10 psi and has made me change my mind on taking the motor out to overhaul it. I will now just fix some small leaks and clean it up just to see how many miles out of it now. Thank you Pennzoil for this product extending the life of my engine that is now @ 235,000 miles and figure I can get that many more at least. I will let y'all know how many that becomes. Thank again!

[This review was collected as part of a promotion.] I use this in my 95 ford mustang with 125k+ miles. Ever since jiffy lube recommended it since my car has over 75k miles. I've noticed a great deal of improvement. Love this oil I use it all time. I recommend Pennzoil brand to every one and use it all the time.

[This review was collected as part of a promotion.] Owning an older model car means taking extra care for it as it ages. This includes oil changes. While I tend to lack on changes frequency, I know with Penzoil High Mileage, I can go the extra mile. It delivers every time. My old truck is a hard worker, and this oil can take the abuse. Reach for it, I do.

[This review was collected as part of a promotion.] Been using Pennzoil since 1978 product keeps improving I'm old school so is Pennzoil the high milage 10w30 is the best for cold starts less engine wear on my older motors thanks Pennzoil for keeping my motors running

[This review was collected as part of a promotion.] This oil saved me from having to buy a car before I'm ready. I have a 2002 Toyota Camry that has 304,000 miles on it I drive 90 miles a day. I have used your oil for high mileage vehicles since the car hit 100,000 miles and I have never had problems. Thanks for helping save me money.

[This review was collected as part of a promotion.] I bought this for my 2006 Pontiac with 150,000 miles. I noticed that over other brands this one actually worked. I only had to add about 1/2 of a quart over 5000 miles instead of the usual full quart!

[This review was collected as part of a promotion.] I change my oil every 4000 miles with Pennzoil high mileage oil, since l went over 100,000 miles, and l expect another 100,000 miles. I drive hard off road and need a oil that meets my demands, that's why I run Pennzoil.