oil analysis @ 66229 miles

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07-05-2010, 11:25 PM

#11

tritium_pie

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Quote:

Originally Posted by SpitfireS,Jul 2 2010, 03:16 PM

Per 1000 mile this last OCI showed the lowest wear metals ppm.
The added 3 quarts would replenish the TBN during the OCI.
IMO there is no reason to change anything.

As fas ar UOA's go.. that is.
That said: this is as good as UOA's come I guess, 1 oil, one engine, one owner, 6 years and counting.

Btw...
tritium_pie Posted on Jun 30 2010, 04:43 AM

Does this mean this last UOA is the same oil as 6 year ago?
How much is "in bulk"?
Just asking.
Because, oil company's change formulations, and to get the same oil (as in: the same blend) for 6 years is not common IMO.

indeed this is not 6-yr old oil. I think each box from Costco held 12 quarts, and I'd only buy one box at a time, perhaps every 9-10 months or so.

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07-06-2010, 12:27 AM

#12

jyeung528

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Quote:

Originally Posted by tritium_pie,Jul 2 2010, 05:41 AM

3 quarts

that makes a HUGE difference.

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07-06-2010, 02:06 PM

#13

mad pup

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Quote:

Originally Posted by jyeung528,Jul 6 2010, 12:27 AM

that makes a HUGE difference.

That's the good thing about the F20c, it ensures that it gets a fresh supply of oil throughout the OCI, haha

I burn a quart every 1500 miles, so I end up having to add 5 quarts over a 7500 mile OCI. Which means, all 5 quarts from the original oil change have been displaced (and replaced) by the time I change the oil. LOL