mobile 1 0W40 analysis results 8700 mile OCI, 00 boxster s

[John V]

My iron jumped to 21 on the last analysis that I did. But again, this oil had a very hard life, two SCCA ProSolos in extreme heat, a national tour plus several local autocrosses. So given all that, I'm extremely happy with the wear behavior.

Attached is my oil report showing my last two oil changes.

[CJ_Boxster]

Heres some information i copied from the blackstone website to show you usually what metals are representative of which parts of the engine.

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Elements are quantified in the oil at part per million levels (PPM). This list shows the most common sources of the elements in a gasoline or diesel engine oil.

Aluminum: Pistons, bearings, cases (heads & blocks).
Chromium: Rings, a trace element in steel.
Iron: Cylinders, rotating shafts, the valve train, and any steel part sharing the oil.
Copper : Brass or bronze parts, copper bushings, bearings, oil coolers, also an additive in some gasoline engine oils.
Lead: Bearings.
Tin : Bearings, bronze parts, piston coatings.
Molybdenum: Anti-wear additive, coating on some new rings
(washes off as break-in occurs).
Nickel : Trace element in steel.
Manganese: Trace element, additive in gasoline.
Silver: Trace element.
Titanium: Trace element.
Potassium: Antifreeze inhibitor, additive in some oil types.
Boron: Detergent/dispersant additive, antifreeze inhibitors.
Silicon : Airborne dirt, sealers, gaskets, antifreeze inhibitors.
Sodium: Antifreeze inhibitors, additive in some gasoline engine oils.
Calcium : Detergent/dispersant additive.
Magnesium: Detergent/dispersant additive.
Phosphorus: Anti-wear additive.
Zinc : Anti-wear additive.
Barium: Detergent/dispersant additive.


Physical properties: Viscosity, flashpoint, % fuel and antifreeze, % water and insolubles are all measured in gasoline and diesel engine oils. If fuel is present in the oil, the viscosity and flashpoint will often be lower than what was stated in the "Should be" line. Insolubles are solid material that is centrifuged out of the oil. They are typically free carbon from the oxidation of the oil itself, along with blow-by past the rings.

[saaber]

Originally Posted by John V

My iron jumped to 21 on the last analysis that I did. But again, this oil had a very hard life, two SCCA ProSolos in extreme heat, a national tour plus several local autocrosses. So given all that, I'm extremely happy with the wear behavior.

Attached is my oil report showing my last two oil changes.

That looks great especially considering the harder driving and the fact that the "universal averages" are for a 4000 mile interval! Viscosity is low which is consitent with the other M1 tests I have seen. It is this thinning effect that makes me want to try a 5W40.

Buster at BITOG revived this interesting redline 5w40 post on a VW 1.8 tubo that was driven hard.

http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=221789&fpart

p.s. I am no redline fanboy but I am very interested in finding the best oil, whatever that may be.

[zemmo]

Thanks for posting the oil results, y'all. I am absolutely DYING to see the results of a 20k interval, though, can't one of you cowboy up and do it?

[John V]

Why would anyone use a 20,000 mile oil change interval?

Maybe if the car was used only for extended freeway driving, yes, but otherwise it seems like a pretty bad idea.

[blinkwatt]

Thanks for all the pics and stuff.

I ordered a sample kit from Blackstone and will send my oil in. I'm very interested in seeing the results.

How long was the turn around for results after you sent the oil in?

[saaber]

Originally Posted by blinkwatt

Thanks for all the pics and stuff.

I ordered a sample kit from Blackstone and will send my oil in. I'm very interested in seeing the results.

How long was the turn around for results after you sent the oil in?

They ran the sample and sent an email report the same day they got it. But sending that little cylinder through the mail is very slow for some reason. Through the el cheapo standard mail, it took 1.5 weeks for the kit to get here and 2 weeks when I mailed it back (Thanksgiving delay included).

Next time I am going to put it in a little box (it seems the post office likes rectangles better than cylinders?) and spend a few more dollars and send it priority mail which should only take a couple days I think.

Blackstone also has an interesting little pump on their site where you can take a sample through the dipstick hole and the oil never actually goes into the pump. So you can just change hoses and reuse the pump. This would be good for interim oil tests on a longer oil run or checking without having to change the oil (Note that auto parts stores have $5-$6 pumps that do the same thing but the oil goes into the pump making it pretty much one-use only unless you can find a way to clean it well).

[RandallNeighbour]

Originally Posted by John V

Why would anyone use a 20,000 mile oil change interval? Maybe if the car was used only for extended freeway driving, yes, but otherwise it seems like a pretty bad idea.

Tell that to Porsche. They're now advertising that all new 08 Pcars only need the oil changed every 20,000 miles or once a year, whichever comes first.

I think they justify this marketing hype on the miles because it would be very difficult to put 20k on a Porsche in a 12 month time period, even as a daily driver.

No one else can justify it though!

[saaber]

Originally Posted by RandallNeighbour

Tell that to Porsche. They're now advertising that all new 08 Pcars only need the oil changed every 20,000 miles or once a year, whichever comes first.

I think they justify this marketing hype on the miles because it would be very difficult to put 20k on a Porsche in a 12 month time period, even as a daily driver.

No one else can justify it though!

You said it, Marketing Hype, what are they thinking? Ah heck, why don't they just say, "no maintenance required, ever."

Porsches do hold a lot of oil, some of which is used for cooling and I don't think Porsche would make a recommendation that would harm their vehicles, However, in a world where their engines have been known to just quit working, I'd err on the frequent change side my own self.