Oil?

[chgolatin2]

I live in the Chicagoland area where weather is constantly changing, which synthetic oil weight is better 5w40,10w40 or 10w30 (redline or amsoil)???

What does the dealer recommends???

Thanks!

[RandallNeighbour]

Dealer recommends filling the engine with Mobil 1 0W40. It's really hard to argue with highly paid Porsche technicians and chemists.

Do a thread search on this forum for oil weight discussions or "mobil 1" and you'll see that this is one huge topic of discussion that's already been covered many times.

[David N.]

That's annoying that 'oil' isn't allowed as a searchable term even though it seems specific enough to be useful.

[Brucelee]

Try engine or motor oil for a search.

M1 or Red Line are both GREAT oil.

The 0W-40 or 5W-40 (in the case of Red Line) are fine for all but racing applications.

Most of us DO NOT subscribe to Porsche's rec of 15 or 20K miles change intervals.

Try 7500 for a longer lived engines.

[RandallNeighbour]

"facing" applications? Did you mean "racing"?

And please tell me I don't have to do an oil change when I take my boxster to the track for high speed driver's education!

[Houston C4S]

Psst! Randall!

You have to go to a DE first before worrying about oil.

But don't worry -- I won't tell anyone.

We can talk about oil later. Off to the SEMA show again
today.

Feel free to share the suspension system of which I sent
you a picture last night. I don't know how to do that on
a forum. Or you can just tell the folks about it.

I am gathering Boxster information here. The other
things here are just peripheral subjects of interest.

I know you understand.

I'll check back in tonight....

- Mark

[paulv]

Originally Posted by Brucelee

Try engine or motor oil for a search.

M1 or Red Line are both GREAT oil.

The 0W-40 or 5W-40 (in the case of Red Line) are fine for all but racing applications.

Most of us DO NOT subscribe to Porsche's rec of 15 or 20K miles change intervals.

Try 7500 for a longer lived engines.

I totally agree with Brucelee -- I'll be ordering my 07 Box S soon (my first Porsche) and will not be following their 20K oil change interval (will do the 7.5K). I currently use M1 0W-40 in my 03 Mercedes E320 and its computer tells me to change oil at approx 15K. An oil analysis indicated that the TBN was at 2.7 after 15K. I would expect the TBN to fall dangerously below 2.0 after running 20K, not to mention that the viscousity will thicken.

BTW, Blackstone labs (http://www.blackstone-labs.com) has a link to an article where a couple of guys did a comparision of M1 and Amsoil -- it's a good read. Also, M1 is a Group 4 synthetic (PAO base) while Redline is Group 5 (POE), and Castrol Syntec is a Group 3 (hydrocracked) which is the cheapest synthetic.

Please don't ask me any questions -- I'm not an oil expert -- I read about this stuff on http://www.bobistheoilguy.com oil forum where there are professional oil people.

This is a great forum -- the MB forums are depressing with everyone complaining about the lousy quality the MB's are these days.

Regards,
paul...

[RandallNeighbour]

Originally Posted by paulv

This is a great forum -- the MB forums are depressing with everyone complaining about the lousy quality the MB's are these days.

Oddly enough, lots of new participants say the same thing about boxster owners on this forum as well.

I guess there are very few reasons to join a forum when your car is running well, needs nothing but gasoline and you're busy enjoying it vs. repairing or trying to mod it to make it faster or look better.