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I know fuel in the oil is not good but I have some additional questions anyway. 1. Someone told me that time lowers octane. Meaning that if the gas is a few months old, its octane is lower. Is that true? 2. If true, would lower octain in the oil lower the oil's viscosity more than highter...

Pennzoil PP+, 5w30, 09 Luxus ES 350, High Copper This Lexus was only driven 1680 miles in over 28 months. It is mostly driven less than 2 miles at a time. It also sits without being driven for periods of time. It was driven about 25 miles before this oil change. I am concern about the high...

Penzoil Platinum Pure Plus (aka PPPP or PPP+) 0w20 2013 I4 Accord, 6134 Miles. 15% OLM The intelligent OLM hit 15% remaining oil life for all the UOAs. The ~ numbers are extrapolated from the approximate miles at 15% and miles when I changed the oil. Blackstone Labs. Code: +...

TBN of virgin PPP+ Is there any info about the TBN for Pennzoil Platinum Pure Plus 0w-20? I did a search but did not find anything.

Mazda 0w20 W/Moly Oil (aka MGMO), 2013 I4 Accord, 7113 Miles, 15% OLM The main difference between the driving conditions for this UOA and the last is: 1. No winter driving. 2. Had a 2 week trip to Nova Scotia of about 2,000 miles. The intelligent OLM hit 15% remaining oil life for all the...

Pennzoil 5w30 Blend, 09 Luxus ES 350 This Lexus was only driven 859 miles in over 13 months. It is mostly driven less than 2 miles at a time. It also sits without being driven for periods of time. It was driven about 25 miles before this oil change. Code: +...

Mazda 0w20 W/Moly Oil (aka MGMO), 2013 I4 Accord, 6651 Miles, ~13% OLM My driving is harder on the oil then many others as showed by getting less miles when the OLM is at 15% then many others with the same engine and OLM %. You can verify this by searching for other UOAs for the 2013/14 Accord...

I have notice not as many posts about the Mazda 0w20 GF5 with Moly oil recently. Has the Mazda oil gown out of favor? Anyway, cost is not a major factor as this is a hobby and it looks like my 2013 Accord's intelligent OLM will have me change the oil between 10 and 12 mounts around 6000 miles...

Honda Factory Oil, 2013 I4 Accord, 5653 Miles, 15% OLM This is a hobby so I had two different labs do a UOL, Caterpillar and NAPA. I'll post the CAT one now and the NAPA one in this tread when it comes in. I have not done this in a while and some of the CAT stuff is new to me. Please let me...

Is high moly harmful to the Cat? I remember reading on here that someone felt high moly is harmful to the Cat. I cannot find it now or any other mention about this possible problem. Is this true? I feel it cannot be too harmful when the oil is gf5 and SN like the new Mazda 0w20 high moly oil.

Which OLMs use driving conditions ? Do all newer car's Oil Life Monitors use driving conditions for computing remaining oil life! Or do some only uses mileage ? Are their any newer cars which do not have OLM?

A friend bought a 2009 Lexus ES350 last year. She just had the oil change after 1 year with about 2400 miles OCI. The oil change was free from the use car dealer. They said they used Pennzoil, a syn blend. Most of the time the car sits is the garage as she lives in Boston and takes public...

The bulk price for Blackstone is $19 without TBN, which is around the present price for the WIX (ALS) with TBN. But WIX does not do SUS, flashpoint , fuel, and insolubles. WIX was a lot cheaper a while ago. I don't know how important SUS is but I would like to know about fuel entering the oil...

Pennzoil Platinum 0W20 but no Ultra 0W20? According to Pennzoil's website, PP comes in 0w-20 but PU does not come in 0W-20. Why not?

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Pennzoil Platinum SM Synthetic 5w-20 03 Honda Accord EX, manual 5 speed with 2.4L 4 cylinders VTEC DOHC engine. BlackStone Labs. Oil had 7,985 miles, 35 weeks, 228 miles/week Makeup oil: 0. Car had 50,770 miles, 2 years and 8 months. Honda recommends 5w-20 oil at 10k miles or 1 year for...

It is getting time to change my oil on the 03 Honda Accord with 4 cylinders again. I will have near 50k miles total on the car. I presently have Pennzoil Platinum 5w20 oil. I have not done a UOA of this oil yet but plan to. I seem to get good results no matter what oil I use. Click here for UAO...

Pennzoil Synthetic, SL, 5w-20 03 Honda Accord EX, manual 5 speed with 2.4L 4 cylinders VTEC DOHC engine. BlackStone Labs. Oil had 6,514 miles, 32 weeks, 203 miles/week Makeup oil: 0. Car had 42,785 miles, 2 years (to the day). Honda recommends 5w-20 oil at 10k miles or 1 year for "normal"...

Pennzoil, 5w-20 03 Honda Accord EX, manual 5 speed with 2.4L 4 cylinders VTEC DOHC engine. BlackStone Labs. Oil had 7152 miles, 18.5 weeks, 386 miles/week Makeup oil: 0. Car had 36,271 miles, 1 year and 4.5 months. I wanted to compare my first UOA with the same conditions and oil after the...

Monday I mailed oil for a UOA. The package was delivered to my home on Wednesday. It looks like they don't know the difference between "TO" and "FROM". They apologized when I returned it back to the post office. The postal worker's reaction showed he had the same opinion as mine.