Rated 3 out of 5 by David RX300 '99 LEXUS RX300 - 174K
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:
- plenum gasket
- valve cover gaskets
- front VVT solenoid
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
March 13, 2016
Rated 5 out of 5 by Nikoli16 The best oil to use for an older vehicle
My dad had bought a 97 chevy over 12 years ago,all he used in it was penzoil 10-W30,it has seen 338,000+ miles and the motor runs like a racehorse,havent thrown a rod or had a tick in it ever,keep up the good work pennzoil!
February 27, 2016
Rated 5 out of 5 by Kwad Runs much smoother!!!
I must say since I switched over to Pennzoil High Mileage, my 2002 Dodge Caravan has been running far smoother, and has more pep. I will continue to use this for the life of my van.
February 26, 2016
Rated 5 out of 5 by heavy D Pennzoil high mileage
I use this in my car and it works great I love Pennzoil products
December 27, 2015
Rated 5 out of 5 by bosseric1976 Durable High Mileage Oil
I've used many different brands of High Mileage Oil. I'm old school I change my oil myself. At oil changes I noticed that other brands of oil felt like canned lubricant oil. Towards the end of the oil change cycle my oil pressure would not be slightly lower than usual. When I used Pennzoil High Mileage Oil it felt the same coming out of the oil drain plug as it did when I poured it into the crank case. The oil pressure was never affected with Pennzoil. My brand of oil is Pennzoil simple as that. Always has been, always will be.
December 27, 2015
Rated 5 out of 5 by Heather Runs like a top
I have bought this for my vehicle for the past five years my vehicle is running better since I've changed to this oil. My vehicle has 210,000 miles on it and runs of the day I bought it
December 24, 2015
Rated 5 out of 5 by Stacieo Awesome product
Bought this and I believe it made a big difference in performance.
December 23, 2015
Rated 5 out of 5 by Prestwoods1 Pennzoil proven
A trusted name with a trusted result of proven product!
December 19, 2015