UOA Used Oil Analysis

Winston · 05-08-2008, 05:01 PM

I am a bit torn now as to what to do. I am not a big M1 fan. All analysis show a lot of iron wear. I might try Pennzoil Platinum. Another issue is the fuel dilution problem. Some say that the various metals in my sample highlight the fuel dilution problem which could be causing sludge and varnish build up that does not show up in the UOA. There is an oil that is known to work very well to prevent issues from fuel dilution. "Renewable Lubes Inc" Biosyn oil. It is kind of expensive, but the Prius only uses 3.5 quarts so it is not that big of an issue. I don't want to use Castrol 0W30, too thick.

tochatihu · 05-09-2008, 03:44 AM

Pennzoil Platinum 0W20 is now in my 2001 Prius, with another driver in New Mexico. I hope to convince him to do the oil/filter/UOA somewhere in the 8 to 10k range. Will post here if it happens.

05-08-2008, 05:01 PM	#41
Winston Senior Member Join Date: May 2007 Location: SF Bay Area, California Posts: 526 My Car: 2007 Prius Package: #6 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Re: UOA Used Oil Analysis I am a bit torn now as to what to do. I am not a big M1 fan. All analysis show a lot of iron wear. I might try Pennzoil Platinum. Another issue is the fuel dilution problem. Some say that the various metals in my sample highlight the fuel dilution problem which could be causing sludge and varnish build up that does not show up in the UOA. There is an oil that is known to work very well to prevent issues from fuel dilution. "Renewable Lubes Inc" Biosyn oil. It is kind of expensive, but the Prius only uses 3.5 quarts so it is not that big of an issue. I don't want to use Castrol 0W30, too thick.

05-09-2008, 03:44 AM	#42
tochatihu Senior Member Join Date: Apr 2004 Location: Kunming Yunnan China Posts: 1,693 My Car: 2001 Prius Package: Pioneer #1 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 5	Re: UOA Used Oil Analysis Pennzoil Platinum 0W20 is now in my 2001 Prius, with another driver in New Mexico. I hope to convince him to do the oil/filter/UOA somewhere in the 8 to 10k range. Will post here if it happens.

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