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Rocket Scientist
Join Date: Jun 2008
Location: Detroit
Posts: 833
Porsche classic motor oil - anyone using it?

From their press release:

Just in time for the start of the spring driving season, Porsche Classic is launching its own engine oil for air-cooled flat-four and flat-six engines: the Porsche Classic Motoroil. Developed in collaboration with the Porsche Development Center in Weissach, the new engine oil was created with the specific aim of meeting the demands of the 356 and 911 models, including the 993 model range. Its operating behavior and lubricating properties were put to the test in extensive laboratory-based tests and practical trials. Available in two different weights, the Porsche Classic Motoroil can be had in: 20W-50 for all 356, 914 and 911 models up to the 2.7-litre G-Model and 10W-60 for flat-six engines from a displacement of 3.0 liters up to the 911 (type 993).
Why Porsche Classic Motoroil Over Today's Oils?
Although modern oils are better from a technical point of view, this is not necessarily the case when it comes to classic air-cooled flat engines. For example, the low viscosity of a 0W-30 oil might mean optimum cold-start behavior, low engine resistance and other benefits in modern engines. However, in a 356, an oil of this kind could result in leaks and increased oil consumption due to the engine's higher production tolerances and lower oil pressure during operation.
Cleaner Isn't Always Better
Modern oils also use highly efficient detergent/dispersant agents to thoroughly clean the engine and reliably remove dirt, which can be too much of a good thing for a classic Porsche engine. While it's true that additional deposits should be prevented and oil-soluble contaminants such as soot, water and dust kept suspended until they are drained off through the oil filter or removed during the next oil change, it's alos important that the deposits which have built up over decades are not suddenly dissolved and that seals are not corroded.
20W-50 for the 356, 914 and early 911 models
Designed for all 356, 914 and 911 models up to the 2.7-litre G-Model, Porsche recommends the multi-grade version with a viscosity of 20W-50. Available from your local dealer starting in April of 2014 you can learn more at Porsche Classic.
20W-50, 1 liter
Porsche Part no.: 00004320928
20W-50, 5 liters
Porsche Part no.: 00004320929
10W-60 For Air-Cooled 911 Models With 3.0 Liter Or Bigger Engines
Starting from the 3.0-litre engine with dry-sump lubrication, the flat-six engines of the 911 are more suited to fully synthetic oils. They allow air-cooled engines to reap all the benefits of technological advances in oils. Porsche Classic's 10W-60 version is an absolute ultra-high-performance oil. Its viscosity guarantees optimum lubrication behavior, both during cold starts and in a hot engine at full throttle. Also available starting in April more information is available at Porsche Classic.
10W-60, 1 liter
Porsche Part no.: 00004320930
10W-60, 5 liters
Porsche Part no.: 00004320931
What's The Difference Between The 20W-50 Oil And The 10W-60 Oil?
There are two main reasons why the 20W-50 oil is recommended for flat engines up to
a displacement of 2.7 liters and the 10W-60 oil is recommended from a displacement of
3.0 liters. Firstly, crucial developments in terms of engine technology, production
tolerances and materials took place between the 2.7- and 3.2-litre models, with the
introduction of the 3.0-litre turbo engine in 1975 representing the greatest enhancement of engine performance. Secondly, Porsche Classic has drawn on its extensive experience in the use of oils in air-cooled flat engines.
Old 07-28-2014, 09:27 AM
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TurboKraft's Avatar
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,392
60W seems awfully heavy for a Turbo.
Chris Carroll
TurboKraft, Inc.
Tel. 480.969.0911
email: -
Old 07-28-2014, 10:57 AM
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Metal Guru
911nut's Avatar
Join Date: May 2001
Location: Michigan
Posts: 2,504
I'm assuming this oil is synthetic.
Wonder if it will be competitively priced?
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 07-28-2014, 12:15 PM
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Registered User
Join Date: Aug 2007
Location: Austin
Posts: 415
from another thread

In the US the MSRPs are as such:

1L (20W-50 00004320928)
(10W-60 00004320930)

5L (20W-50 00004320929)
(10W-60 00004320931)

Porsche Oil 10W-60:Porsche Parts & Porsche Accessories - Wholesale Porsche Parts & Tequipment
Old 07-28-2014, 01:19 PM
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Rocket Scientist
Join Date: Jun 2008
Location: Detroit
Posts: 833
Originally Posted by TurboKraft View Post
60W seems awfully heavy for a Turbo.
I agree with that. Not exactly cheap either.

The 10W-60 is a synthetic. The 20W-50 is not.
Old 07-28-2014, 05:47 PM
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Roby466's Avatar
Join Date: Sep 2009
Location: Halifax, Canada
Posts: 616
it would be interesting to see the additive list and ZDDP content. I have been using Liqui Moly (or Lubro Moly) as they gave me the additive details but it is just as expensive as that one. If it is specifically formulated for our cars, maybe a good thing...
1985 Black 930, K27 7006, Garretson Intercooler, Adj boost, TB: 23 - 31mm, bielstein sport shocks, ER polybronze bushings front and rear, ER monoball joints front and rear with offset camber plates, 935 X triangulated strut brace, raised spindles, racing bump steer kit
1981 Black 911sc (sold)
Old 07-29-2014, 05:46 AM
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Now Available for Ordering:   101 Projects For Your BMW 3 Series 1982-2000  [more info]
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xbmwguy's Avatar
Join Date: Apr 2008
Location: west palm beach fla
Posts: 1,559
i will be sticking with my mobil 1 15-50 full synthetic changed at 3k thank you!
Old 07-29-2014, 05:58 AM
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