Just did a Royal Purple Oil change, smoke?

[gregdacat]

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.

[Flavor 987S]

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.

[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

[cnavarro]

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.

[cnavarro]

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.

[Brucelee]

Get the 5-30 out of the engine. Pronto.

[violametallic-S-]

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.

[blinkwatt]

Where can I get the Royal Purple 0-40?

[Bladecutter]

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.

[Flavor 987S]

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?