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Originally Posted By: ctc Originally Posted By: White_Monster I use a Purolator PureOne Gold PL20195. Cut it open and post pics ! I should have, but threw it away before I thought about it ... I will next time though.

Originally Posted By: ARCOgraphite OP- Did you leave the pureOne oil filter in for the duration of the OCI or change it out once? Thanks! I left the same filter in for the entire 15,000 miles.

Also, would you really know for sure what oil type and viscosity was in the engine ? Probably not, nor the miliage on the oil either. And as mechanicx said, most used car dealers change the oil before putting it on the lot anyhow. Good luck.

I love the 5-quart jugs !!

An oil analysis is used to determine engine wear and other factors. It is too bad that the suspect oil cannot be analysed as that will have told you what you are wanting to know. I would run the current oil for the manufacturers recommended period, according to your climate and driving...

Originally Posted By: Jason Adcock What was the oil filter? I use a Purolator PureOne Gold PL20195. Originally Posted By: Jason Adcock Are the comments calling for binning the K&N filter because of the silicon? It doesn't look all that high to me, especially for 15k miles. I'm not an OCG filter...

I asked an oil analysis lab technician, whether synthetic oils really have to be changed annually, regardless of miliage and this is what he replied; "Our data base has many different engines that have various oil change intervals. We do have a few where the owner has kept the oil in use for up...

Bigger image in case anyone wants to actually read it ... :)

I just got back a great UOA where the oil ran for 17 months and 14,626 miles and the TBN level was still 2.2 Might push the next OCI to 16,000 or 24 months, whichever comes first !!!

Originally Posted By: ps49556n Great analysis... I am sorry if you already mentioned this but how long (months) was the oil in for? Oh sorry, I put all the data in the UOA section. This oil was in the truck for 17 months (since August 2008) !!

The funny thing is a neighbor that has a "hurt" Ford F150 with a rear oil seal leak wanted the old stuff to put in his truck !! I happily put the old stuff in the jug and gave to him.

I just got my first UOA back for my PreRunner two-wheel drive that has 102,023 miles on the odometer with no known problems of any kind. It was a very interesting exercise, since the M1 "Extended Performance 15,000" has been in the truck since August 11, 2008 (17 months) and has gone 14,262...

Just got my UOA back and as promised, posted it here as well as in the other section.

Lexus, that was in answer to this question from Johnny. Originally Posted By: Johnny Who are you a train conductor for? I worked for the BN many years ago and left right after they merged with the Frisco.

Oh, I forgot to mention the TBN test costs $10 more. The TBN measures the amount of active additive left in the oil sample, which is informative for those desiring to extend their OCI.

Originally Posted By: calvinnnnnnnnn blackstone gives a free first report? calvinnnnnnnnn, BSL provides a free test kit, the testing costs $22.50.

Great report Steve. I have a 2001 Toyota Tacoma with an Inline Four 2.7L engine and 102,023 miles on the odometer and have pushed the OCI of the M1 5W30 EP to just over 14,000. Will post UOA as soon as I get it back from Blackstone. What is the total miliage on your Civic ?

Wow, some really good information and interesting comments, thanks fella's. I got my Blackstone kit in today's mail, so I will drop the oil tomorrow and get it sent to Fort Wayne, IN. on Monday. Can't wait for the results and will post them up on this board. Might as well put the link up here...

Originally Posted By: Kaboomba Those 6 trips/year, if reasonably dispersed throughout the year, are sufficient to get you by on nearly any oil, but you should still change after 12mo. Just have a little hot'n'fast WOT time on each of your N.C. trips. Kaboomba, my NC trips are in April, May...

I have never heard of Dyson Analysis or Polaris Labs. Is there a list anywhere on the forum ?