MOBIL SYNTHETIC OIL
07-31-2006, 08:52 AM
#1
Three Wheelin'
Thread Starter
MOBIL SYNTHETIC OIL
I recently read some stuff about some guy's here in Oz that use Mobil Delvac 1( deisel engine oil ) in their 928's. I done some checking and found that it is apparently brilliant in turbocharged gasoline engines as well. It has all the additives that keep the motor clean and the turbo bearings and seals enjoy a longer life due to cooler running. Apparently. Wonder if others have heard of, or indeed use it. One of the guy's on the site ( http://www.landsharkoz.com ) is a chemist if I recall and was contracted by a trucking company to carry out tests and see if was worth their while to use it.
07-31-2006, 11:21 AM
#4
Former Vendor
Synthesized dyno oil - aka Synthetic Oil - is till the best by far for stability in the hellaciously tortous confines of a 930 engine. If you are running synthetic right now........why change?
07-31-2006, 08:24 PM
#7
Not Forgotten
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I asked a question to an oil specialist recently
I answered to pre written questions......
Make: Porsche
Model: 930
Year: 1987
Engine type: 3.3 turbo
Modifications: Too many to list, 490bhp
Driving style: Weekend car, I get it warm then drive it like I’ve stolen it
Any other information that may be relevant: It runs quite rich so as to avoid detonation
What recommendation are you looking for? Engine,Gearbox,Differential etc: Engine
BTW, good thread, oh yes and at the moment it's running with Castrol RS, not sure what grade
He relied with......
Reading what you have written, decent oils is the key here with mods and driving style.
I would look at top ESTER based race oils which Castrol RS 10w-60 is not, it is in fact petroleum based.
According to my database the engine requires 15w-50 and the gearbox 75w-90 GL5 due to the fact that the differential uses the same oil.
I would recommend Silkolene Pro R 15w-50 and Silkolene Silktran SYN 5 75w-90.
These products are currently on offer in the Members Section of my website.
Cheers
Simon
I answered to pre written questions......
Make: Porsche
Model: 930
Year: 1987
Engine type: 3.3 turbo
Modifications: Too many to list, 490bhp
Driving style: Weekend car, I get it warm then drive it like I’ve stolen it
Any other information that may be relevant: It runs quite rich so as to avoid detonation
What recommendation are you looking for? Engine,Gearbox,Differential etc: Engine
BTW, good thread, oh yes and at the moment it's running with Castrol RS, not sure what grade
He relied with......
Reading what you have written, decent oils is the key here with mods and driving style.
I would look at top ESTER based race oils which Castrol RS 10w-60 is not, it is in fact petroleum based.
According to my database the engine requires 15w-50 and the gearbox 75w-90 GL5 due to the fact that the differential uses the same oil.
I would recommend Silkolene Pro R 15w-50 and Silkolene Silktran SYN 5 75w-90.
These products are currently on offer in the Members Section of my website.
Cheers
Simon
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08-01-2006, 02:23 AM
#8
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I recently read that Porsche recommends that all new Boxsters have their oil changed every 15,000 miles when using Mobil 15w-50. Even on the back of the 15w50 it states " Protection guarenteed of critical engine parts from lubricant related failure for 15,000 miles or one year, whichever comes first". The one year is not so impressive however the 15,000 is eye catching!
08-01-2006, 09:35 AM
#9
Three Wheelin'
Thread Starter
Hi Scott,
firstly BB is a topic I prefer not to comment on except to say that how some
people survive in business truely amazes me
Firstly is Delvac 1 5w-40 better than Mobil 1 (say 5w-50) well, yes it is.
(In some applications M1 0w-40 may be a better choice - I use it in my new
CLK Benz)
The biggest advantage Delvac 1 has is that it has around 25% sophisticated
ester content - this is beneficial at high/low temps, for engine
cleanliness, for viscosity retention and for protecting oil seal integrity.
It also has a very high TBN which protects low use engines from camshaft
corrosion and etc due to rising acidity from combustion processes. Its ester
content is especially good at minimising journal bearing, valve drive
components (lobes/chains/gears/sprockets) and thrust washer wear
Delvac 1 5w-40 will do an excellent job in your car. It conforms with the
viscosity requirements for your car and exceeds the specifications required
by a substantial margin. As well it conforms with Porsche's Approved Oils
List (911 D 1701 1) of 29/12/2000 and then later superceded in 2004 with
only synthetic oils being Approved
The 911 first came out with a "mixed fleet" diesel oil as the factory fill.
This continued Porsche's use of diesel oils from the 356 onwards. This was
later changed to include multigrade oils but still with dual petrol/diesel
ratings. It is still the same today!
I have used Delvac 1 5w-40 since 1997 in a wide variety of engine types. In
a 911 such an oil has some desirable attributes. It is very robust at high
temperatures - great with turbochargers- and it is especially forumlated to
resist foaming and losing/gaining viscosity over long periods
You may notice a slight drop in oil pressure at idle due to the oils (all
synthetics but especially Mobil 1) superior flow characteristics. Flow of
course remains the same but better flow charcteristics of the synthetic
lubricant tends to reduce pressure. (Pressure is simply the resistance to
Flow of course).
It should help the engine run cooler than a mineral oil does - if you are
using one now
What oil do you currently use?
NOTE - I do not work for any Oil Company - I did for some years -
Caltex-Chevron in Copenhagen, Denmark in the 1960s. I first worked on
Porsches then!
I am retired!!
Regards
Doug
This is a reply from an email I sent to guy I was talking about
firstly BB is a topic I prefer not to comment on except to say that how some
people survive in business truely amazes me
Firstly is Delvac 1 5w-40 better than Mobil 1 (say 5w-50) well, yes it is.
(In some applications M1 0w-40 may be a better choice - I use it in my new
CLK Benz)
The biggest advantage Delvac 1 has is that it has around 25% sophisticated
ester content - this is beneficial at high/low temps, for engine
cleanliness, for viscosity retention and for protecting oil seal integrity.
It also has a very high TBN which protects low use engines from camshaft
corrosion and etc due to rising acidity from combustion processes. Its ester
content is especially good at minimising journal bearing, valve drive
components (lobes/chains/gears/sprockets) and thrust washer wear
Delvac 1 5w-40 will do an excellent job in your car. It conforms with the
viscosity requirements for your car and exceeds the specifications required
by a substantial margin. As well it conforms with Porsche's Approved Oils
List (911 D 1701 1) of 29/12/2000 and then later superceded in 2004 with
only synthetic oils being Approved
The 911 first came out with a "mixed fleet" diesel oil as the factory fill.
This continued Porsche's use of diesel oils from the 356 onwards. This was
later changed to include multigrade oils but still with dual petrol/diesel
ratings. It is still the same today!
I have used Delvac 1 5w-40 since 1997 in a wide variety of engine types. In
a 911 such an oil has some desirable attributes. It is very robust at high
temperatures - great with turbochargers- and it is especially forumlated to
resist foaming and losing/gaining viscosity over long periods
You may notice a slight drop in oil pressure at idle due to the oils (all
synthetics but especially Mobil 1) superior flow characteristics. Flow of
course remains the same but better flow charcteristics of the synthetic
lubricant tends to reduce pressure. (Pressure is simply the resistance to
Flow of course).
It should help the engine run cooler than a mineral oil does - if you are
using one now
What oil do you currently use?
NOTE - I do not work for any Oil Company - I did for some years -
Caltex-Chevron in Copenhagen, Denmark in the 1960s. I first worked on
Porsches then!
I am retired!!
Regards
Doug
This is a reply from an email I sent to guy I was talking about
