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Old 09-21-2009, 05:59 PM   #1
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Just did a Royal Purple Oil change, smoke?

I just did a oil change on my 01 Boxster S. First time using Royal Purple i went with 5w-30 hopefully thats a wise choice, because after I got home i read about pedro switching to 10 50 to prevent RMS leak.

The main thing here is I noticed black smoke from the exhaust when hard on the throttle. And I never had this before. So im assuming this is a good thing and the oil is cleaning out the internals of the engine, am i correct?

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Old 09-21-2009, 07:40 PM   #2
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I just did an oil change with 0W40 Royal Purple and I saw no smoke out the rearview mirror, but now you've got me looking.

Could be the fact that the RP is dark purple and not light golden brown like the M1...could be your AOS crapping out on you, or the typical cloud after the motor sits a day or two cold and oil seeps into the cylinders (normal).
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Old 09-22-2009, 12:24 AM   #3
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I changed my oil this weekend, too. Went with Royal Purple 10w-40 because I drive very little during the winter and it does not get super cold around here. IMHO 30 weight is a tad thin for a 986.

I am not getting any smoke like you described. The engine does seem to run quieter compared to my previous fill which was Mobil 1 0w-40.

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Old 09-22-2009, 03:25 AM   #4
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Royal Purple is NOT a Porsche approved oil. I hear it is an excellent product, though, and may try it in the future. I am currently using Red Line.

But, only Randal is using the proper Porsche approved viscosity. I would never use a 5W30 in a Porsche engine, and is not an approved viscosity. 10W40 is not approved either, but a safer choice. You will probably notice more lifter chatter on cold start-ups.

And this statement from Violametallic, "... So im assuming this is a good thing and the oil is cleaning out the internals of the engine, am i correct?" is certainly NOT a good thing. You have other issues going on that need fixing.
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Old 09-22-2009, 03:36 AM   #5
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Here is an interesting oil write-up. I have zero opinion on the findings or validity:

http://www.animegame.com/cars/Oil%20Tests.pdf
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Old 09-22-2009, 04:54 AM   #6
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You should never use an anything/w30 in your Boxster.

0w40 is the minimum, 5w40 is preferred, 10w40 is equally good for warmer climates, per the earlier Porsche approved oil service bulletins.
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Old 09-22-2009, 05:00 AM   #7
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Quote:
Originally Posted by Flavor 987S
Here is an interesting oil write-up. I have zero opinion on the findings or validity:

http://www.animegame.com/cars/Oil%20Tests.pdf
The Timken Falex bearing test has largely been discredited as a valid method of testing oils - the Holden/Commodore magazine that published that article later published a retraction.

What the test shows is how much moly is in the oil - oils with a poor score have little or no moly - oils with alot (Royal Purple, Redline) have the best, etc.

The test can also be skewed depending on how you perform the test. Knowing how moly interacts with pressure and wear surfaces, it takes anywhere from say 30 seconds to five minutes for moly to form a new wear surface consisting of "glassy plates" when then are sacrificial. Depending on the pressure exerted on the torque arm and how fast the load is applied, this will affect the amount of moly wear film and it's load bearing capacity.
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Old 09-22-2009, 05:28 AM   #8
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Get the 5-30 out of the engine. Pronto.

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Old 09-22-2009, 05:30 AM   #9
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Quote:
Originally Posted by cnavarro
The Timken Falex bearing test has largely been discredited as a valid method of testing oils - the Holden/Commodore magazine that published that article later published a retraction.

What the test shows is how much moly is in the oil - oils with a poor score have little or no moly - oils with alot (Royal Purple, Redline) have the best, etc.

The test can also be skewed depending on how you perform the test. Knowing how moly interacts with pressure and wear surfaces, it takes anywhere from say 30 seconds to five minutes for moly to form a new wear surface consisting of "glassy plates" when then are sacrificial. Depending on the pressure exerted on the torque arm and how fast the load is applied, this will affect the amount of moly wear film and it's load bearing capacity.
Excellent! Thanks, Charles. You da man when it comes to oils! Do you have a link to the retraction?
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Old 09-22-2009, 07:22 AM   #10
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Black smoke is related to excessive enrichment/ fuel.. Not from oil.
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Old 09-22-2009, 07:33 AM   #11
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Quote:
Originally Posted by Brucelee
Get the 5-30 out of the engine. Pronto.




What will happen? This is the first time I used the 5 30.
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Old 09-22-2009, 09:01 AM   #12
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Where can I get the Royal Purple 0-40?
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Old 09-22-2009, 09:13 AM   #13
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Where can I get the Royal Purple 0-40?
I have seen it at napa, do a search of autozone, and the likes and you should find it.
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Old 09-22-2009, 09:19 AM   #14
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In the mid-west O'Reilly's Auto parts is listed on Royal Purple's website as carrying 0w-40. Don't know if you have them out West.

Go to RP's website and do a search for a location. They will not only tell you who carries their products, but which products the vendor sells.
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Old 09-22-2009, 09:25 AM   #15
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I've looked at Kragen's and Napa with no luck and no registered RP dealer around here has 0-40 only 5-30 and 10-30...
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Old 09-22-2009, 09:31 AM   #16
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Check out this link on Amazon.com. Shipping is free on any order over $25. Also Pep Boys will special order any RP product but be prepared to pay a premium.

http://www.amazon.com/Royal-Purple-11484-Synthetic-Motor/dp/B002KD0M8A/ref=sr_1_2?ie=UTF8&s=automotive&qid=1253640516&sr=8-2
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Old 09-22-2009, 10:36 AM   #17
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Let's not hi-Jack the thread!
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Old 09-22-2009, 10:41 AM   #18
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Royal Purple gets a $2-3/qt premium for the 0w40 and 5w40 over the 10w40.

I'd only use the 40 weight oil in my engine. Porsche never recommended the 30 weight oil. Oil that's too light may not have strong enough film strength and will reduce system pressure.

If the smoke is black, it's a fuel related issue, as stated earlier. Burning oil is blue.

Last edited by blue2000s; 09-22-2009 at 10:51 AM.
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Old 09-22-2009, 01:47 PM   #19
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Quote:
Originally Posted by violametallic-S-
What will happen? This is the first time I used the 5 30.
To be honest, nothing will happen than is bad for the engine.

Here's the link to Royal Purple's tech sheets for their engine oils:

http://www.royalpurple.com/prod-pdfs/motor-oil-ps.pdf

Some important numbers to look at:
Flash Point, Fire Point, cST @ 100C, SSU @ 210F

The Flash and Fire points will tell you how hot the oil can get before it will start to break down.

The viscosities tell you how thick the oil is at the testing temperature. The higher the number is, the thicker the oil is at that temperature, and for the most part, the better that oil will protect your engine when you get it good and hot.

Your 5W-30 oil will most likely be fine if you are just driving the car like a normal person. If you track the car, or abuse the drivetrain for really long periods of time, you run the risk of the oil breaking down in the critical locations, like the piston ring to cylinder wall area, and the connecting rod bearings.

You might want to run this oil change only 5k miles.
If you want to see if you can use the oil from now on, send off an oil sample to be tested at 2500 and 5k mile intervals.

BC.
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Old 09-22-2009, 02:03 PM   #20
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Given the price of the engine vs the price of oil, I am not sure I woud be comforted by a statement that my engine would 'likely be fine!"

But, I am risk adverse, in general.


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