08-26-2013, 05:35 PM
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#1
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Registered User
Join Date: Jul 2013
Location: California
Posts: 43
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Which oil to use
Living in the desert should I be using a different weight oil for my 98 boxster with 115,000 miles?
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08-27-2013, 04:58 AM
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#2
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Registered User
Join Date: Jul 2009
Location: Arlington Heights, IL
Posts: 1,561
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Use a high quality, full synthetic, 5W40 or 5W50. Change yearly or every 5,000 miles. What are you using now?
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08-27-2013, 09:11 AM
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#3
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Registered User
Join Date: May 2009
Location: Frederick, MD
Posts: 1,396
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Quote:
Originally Posted by Flavor 987S
What are you using now?
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ruh-roh...
__________________
"Speed has never killed anyone, suddenly becoming stationary... that's what gets you."
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08-27-2013, 10:44 AM
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#4
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Registered User
Join Date: Jul 2013
Location: California
Posts: 43
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What's up with the ruh-roh?
I'm using Mobil 1 0W-40, that's what the Porsche dealer recommended.
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08-27-2013, 10:56 AM
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#5
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Registered User
Join Date: May 2009
Location: Frederick, MD
Posts: 1,396
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__________________
"Speed has never killed anyone, suddenly becoming stationary... that's what gets you."
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08-27-2013, 01:18 PM
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#6
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Registered User
Join Date: Jul 2009
Location: Arlington Heights, IL
Posts: 1,561
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Quote:
Originally Posted by doli3415
I'm using Mobil 1 0W-40, that's what the Porsche dealer recommended.
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I'd recommend either:
Joe Gibbs DT40 5W40
or
Mobil 1 5W50
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08-27-2013, 05:02 PM
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#7
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Rennzenn
Join Date: Feb 2005
Location: Virginia
Posts: 1,369
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Quote:
Originally Posted by Flavor 987S
Use a high quality, full synthetic, 5W40 or 5W50. Change yearly or every 5,000 miles. What are you using now?
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+1
And use Castrol full synthetic
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08-28-2013, 07:43 AM
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#8
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Registered User
Join Date: Aug 2013
Location: SoCal
Posts: 14
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Quote:
Originally Posted by j.fro
+1
And use Castrol full synthetic
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Without going into a long rant, the term "full synthetic" means different things to different people and world markets.
In seriously warm SoCal low desert, perhaps consider Redline 10W-40. In high desert with occasional frosty mornings Redline 5W-40 would be a decent choice. (Properties differ appreciably only at truly cold start-up.) Neither is cheap.
There are lots of good oils. I love "German Castrol" (a heavy 0W-30) for my GTI, but most would say the claimed HTHS viscosity of around 3.5 or 3.6 is a little low for the 986.
Last edited by riverside986; 08-28-2013 at 09:14 AM.
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08-28-2013, 08:16 AM
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#9
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Registered User
Join Date: Nov 2012
Location: Southern, CA
Posts: 460
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Quote:
Originally Posted by doli3415
I'm using Mobil 1 0W-40, that's what the Porsche dealer recommended.
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Me too. Change it every 5K as well.
__________________
1999 Boxster Zenith Blue Metallic/Savanna Beige
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08-28-2013, 11:55 AM
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#10
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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I use Mobil 1 10W-40 High Mileage. Perfectly happy.
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
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08-28-2013, 12:05 PM
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#11
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Registered User
Join Date: Nov 2009
Location: Winnipeg MB
Posts: 2,485
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Gee, a "which oil?" thread... strange that topic has never come up before...
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'99 black 986
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08-28-2013, 01:30 PM
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#12
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Registered User
Join Date: Feb 2011
Location: Algonquin, Misarikwack
Posts: 710
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........................
Last edited by madmods; 08-29-2013 at 02:32 AM.
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08-28-2013, 02:55 PM
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#13
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Registered User
Join Date: Dec 2008
Location: Queensland, Australia
Posts: 1,522
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For the simple reason that Porsche AG and Mobil Inc have a commercial agreement....
If Castrol or AN Other oil company put in the lowest bid next time Porsche went to tender for the supply of lubricants, then the recommended oil would be Castrol or AN Other and Mobil would be soon forgotten.
It wasn't very long ago that Porsche AG had a commercial agreement with Shell ND to supply all their lubricants - just look for the Shell logo in the engine compartment of the air cooled cars.....
__________________
2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley.
2001 MV Agusta F4.
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08-28-2013, 05:20 PM
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#14
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Registered User
Join Date: Oct 2010
Location: Nampa, ID.
Posts: 488
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Use 10-40 or 10-50. No need for 5 or 0 in California. I use 10-40 year round here in Idaho.
__________________
2000 Boxster S
And then there are the Motorcycles.
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08-28-2013, 06:25 PM
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#15
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Registered User
Join Date: Nov 2008
Location: Massachusetts
Posts: 4,810
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I swear by it !
__________________
Don't worry … I've got the microfilm.
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08-28-2013, 06:54 PM
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#16
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Registered User
Join Date: Jul 2013
Location: California
Posts: 43
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Hilarious 
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09-03-2013, 12:59 PM
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#17
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Registered User
Join Date: Aug 2013
Location: Kent
Posts: 56
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Mobil 1 0w-40
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09-06-2013, 09:09 PM
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#18
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Registered User
Join Date: Oct 2010
Location: Nampa, ID.
Posts: 488
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JD ... I thought you were a secret agent ... not a matador ... 
__________________
2000 Boxster S
And then there are the Motorcycles.
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09-07-2013, 06:24 AM
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#19
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Registered User
Join Date: Nov 2009
Location: Winnipeg MB
Posts: 2,485
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More of a Gremlin than a Matador I would think....
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'99 black 986
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09-07-2013, 06:56 AM
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#20
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Registered User
Join Date: Aug 2013
Location: Kent
Posts: 56
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Sorry 10w 60 mobil 1 not 0w 40!
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986RS
Long term project...
Fiat 500 Abarth Cabriolet
Dangermobile
Linear Mode
