10-17-2007, 08:30 AM
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#1
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Porschephile
Join Date: Jun 2007
Location: Portland, Maine
Posts: 337
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Don't shoot me! Oil question.
Hey guys. Still treading lightly over here at 986forum. Yes, I did a search first. Found many threads about the general subject but not one that answered my questions. Seems the oil questions come up often just like they did on the last Miata forum I was part of. Before someone rants all over my party... let me ask the question this way... I will be doing my first oil change this weekend. Any tricks I need to know about? I got my filter, new plug and washer but no oil yet. I've always used Mobil1 in all my cars. I read the owners manual and saw a list of approved ratings. It asks you the average temperature and then gives 3 or 4 ratings. I settled on 10w-40 but the only M1 I could find in 10W40 was a high mileage oil. Sorry to be long winded but now to the question... if you're using Mobil1 which rating are you guys using?
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2004 Porsche Boxster S
Portland, Maine
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10-17-2007, 08:34 AM
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#2
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Guest
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Porsche has updated the oil recommendations. You should buy 0W40 Mobil 1.
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10-17-2007, 08:37 AM
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#3
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Registered User
Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
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You can also use AMSOIL and Red Line in the appropriate weights.
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Rich Belloff
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10-17-2007, 08:43 AM
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#4
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Guest
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Quote:
Originally Posted by Brucelee
You can also use AMSOIL and Red Line in the appropriate weights.

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Yes, Red Line is great, and I am using this now. Their full snythetic is 5W40. Put it in last October, and did about 9,000 miles. Just got it change last Friday, and went with the Red Line again. Price went up too...now it is over $9/quart. Mobil 1 has gone up too.
www.redlineoil.com
Last edited by bmussatti; 10-17-2007 at 08:49 AM.
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10-17-2007, 09:08 AM
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#5
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Porschephile
Join Date: Jun 2007
Location: Portland, Maine
Posts: 337
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Where do you find out more about these "updated" recomendations by the factory?
-Tom
Quote:
Originally Posted by bmussatti
Porsche has updated the oil recommendations. You should buy 0W40 Mobil 1.
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2004 Porsche Boxster S
Portland, Maine
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10-17-2007, 09:19 AM
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#6
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Registered User
Join Date: Sep 2007
Location: NJ
Posts: 126
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Quote:
Originally Posted by Tomikaze
Where do you find out more about these "updated" recomendations by the factory?
-Tom
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I was going to ask the same thing. It seems that oil weight is still a topic of debate, and with some people/shops apparently just totally disagreeing and disregarding Porsche's own recommendations. Even the owner's manual doesn't state much in terms of an agreed upon viscosity, which almost leads me to believe that it isn't critical. However, I'd obviously like to do what's best for my engine.
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2000 Guards Red Boxster
There is no substitute.
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10-17-2007, 09:51 AM
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#7
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Registered User
Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
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In the OLD days (1997-1999) Porsche used to recommend M1 15-50W. They changed later on to M1 0-40 Euro oil.
To me, unless you are racing or live in the extreme heat of say, AZ in summer, the 5-40 or 0-40 should be fine.
I have used 15-50 in some of my 911s if I had it in stock.
No worries, I think.
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Rich Belloff
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10-17-2007, 10:43 AM
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#8
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Guest
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Quote:
Originally Posted by Tomikaze
Where do you find out more about these "updated" recomendations by the factory?
-Tom
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One way is to become a Contributing Member (say a $25 donation) on some of the other Forums. RennTech is how I have learned about these TSB's and updates.
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10-17-2007, 02:15 PM
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#9
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Registered User
Join Date: Aug 2005
Location: Kansas City
Posts: 319
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Porsche's updated recommendations are almost exclusively 5w40. The ONLY 0w40 recommended wt oil is Mobil 1, but among the Mobil 1 recommendations are nine others all with 5w40 wt. Apparently, if I'm reading this correctly (page 2, temperature ranges), you can use 0w40 for all temp ranges, but if the temp falls below -12 F you can ONLY use 0w40. Its a little confusing and took two readings to get that but I believe that's what its saying. Except for the one line listing of Mobil 1 0w40, the entire three pages of recommended oils are 5w40.
Go here: http://mike.focke.googlepages.com/mikesporscheboxsterwebpages scroll down to the approved oils list. Its a pdf of the Jan,05 Tech bulletin titled "engine oils approved by Porsche".
This whole subject of oil viscosity, change intervals and everything else related to it is confusing as hell. Especially when Porsche changes their recommendations so frequently. The owner's manual says use 0w40. But I believe there's another tech bulletin disputing that. The change interval in the book is 15K. I believe there's still another tech bulletin on THAT subject also. I think I'll stick with either 0w40 or 5w40 and change it every 7500 miles and forget about it!
Bob
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79 911SC Targa.. gone but not forgotten
2001 Boxster Black/Savanah Beige
RoW M030 suspension
7/15 mm spacers
Deambered
Desnorked
SS door sills
Debadged
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Technobrace
Technobra
I'll never own another black car!
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10-18-2007, 08:11 AM
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#10
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Registered User
Join Date: Jun 2007
Location: Bowmanville, Ont
Posts: 295
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Danger..
Too many opinions being expressed here. you'll draw boxsterz's wrath.
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-- 02 Boxster S
-- Black/Black
-- Sideskirts/PSE
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10-18-2007, 08:11 PM
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#11
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Registered User
Join Date: May 2002
Location: San Jose
Posts: 1,889
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Another list was issued on 4/11/07.
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10-18-2007, 11:27 PM
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#12
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Registered User
Join Date: Feb 2006
Location: los angeles
Posts: 256
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Quote:
Originally Posted by Sputter
Too many opinions being expressed here. you'll draw boxsterz's wrath.
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you poser! porsche owners are only worried about changing oil using the proper viscosity. you should be more concerned about chipping, exhausts,intakes and drag racing.
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that guy "boxsterz" thinks you're a poser. i disagree.
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10-19-2007, 05:53 AM
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#13
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Registered User
Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
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You guys are clever.
Lets let our friend simmer down in peace.
Thanks
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Rich Belloff
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