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Which oil for my turbo Saab? #4472915
07/28/17 09:15 AM
07/28/17 09:15 AM
Joined: Jul 2017
Posts: 2
Sweden
lbs129 Offline OP
lbs129  Offline OP
Joined: Jul 2017
Posts: 2
Sweden
Hi,

I am trying to decide which engine oil to use in my car. I am no oil expert but not a total novice either. I am learning more and more what the numbers in the technical datasheets mean, but I am still not sure what is suitable for my car.

I drive a 1997 Saab 9000 2.3 Turbo with the 200 hp B234L full-pressure turbo engine. It is an iron block engine with aluminium head, dual overhead camshafts and port injection. It has done 347000 km (about 215600 miles) so it's not really brand new anymore. However, it runs fine and I want to use a really good oil to keep it that way despite the high mileage.

I live in Sweden in a rather cold climate. Temperatures rarely exceed 30C (86F) in summer but sometimes fall to -25C (-13F) in winter. My car is parked outside and must be able to start in those low temperatures without to much wear on the engine. Thus, the oil must have good cold start characteristics. However, it must also be able to withstand hours of highway driving in summer with heavy load and accelerations.

My Saab manuals call for a Saab Turbo oil or an oil according to API SG/SH, ACEA A2-96/A3-96 and CCMC G4/G5. Several viscosities are suggested. Primarily 10W-30 or 10W-40 but also 5W-30 or 5W-40 in cold climates or 15W-50 or 20W-50 in hot climates.

The old Saab Turbo oil is not sold anymore and Saab Parts refer to the Genuine GM Dexos2 Fuel Economy Long Life 5W-30 recommended for newer GM Europe cars (Saab, Opel, Vauxhall and Chevrolet). That oil is a ACEA C3-compliant low-SAPS oil and I am not sure it is the best for my car.

I am currently using Mobil 1 New Life 0W-40, the now discontinued version being replaced by Mobil 1 FS 0W-40. I have one more 5 L can of New Life, but then I would have to change to something else. The 0W-40 viscosity is not mentioned in my Saab manuals but I believe this is because 0W-xx oils didn't exist on the mass market in 1997. Am I right? I chose 0W-40 for the cold start properties since I believe a lower viscosity in cold temperatures cannot hurt. It still has the same viscosity at operating temperature. Again, am I right?

So, what should I look for in the oil I choose? Let's sum up some specific questions:

1. Should I limit my search to 0W-xx oils for the cold start performance, or is a 5W-xx good enough? Are low MRV, CCS and pour point values more important? 5W-xx oils are generally cheaper than 0W-xx oils here.
2. Is low-SAPS a bad thing for my engine? Is there a reason to buy a full-SAPS oil? Are high HTHS and TBN values more important?
3. Is the low-SAPS Genuine GM Dexos2 Fuel Economy Long Life 5W-30 a good choice? It is available very cheap here.
4. Looking at Mobil 1 oils, we have the ESP 0W-40 (low-SAPS ACEA C3) and FS 0W-40 (full-SAPS ACEA A3/B4). What are their advantages and disadvantages for my car?

Thank you in advance.

Best regards,
Johan


1997 Saab 9000 2.3 Turbo running on Mobil 1 New Life 0W-40
Re: Which oil for my turbo Saab? [Re: lbs129] #4472932
07/28/17 09:41 AM
07/28/17 09:41 AM
Joined: Dec 2016
Posts: 7,201
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,201
Waco, TX
Originally Posted By: lbs129
I am currently using Mobil 1 New Life 0W-40, the now discontinued version being replaced by Mobil 1 FS 0W-40.


Johan,

welcome


Your choice of full synthetic 0W-40 is a well-thought one.
You obviously did some research to make that choice.

I doubt there are "major changes" to the formula, I would continue to use full synthetic 0W-40


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Which oil for my turbo Saab? [Re: lbs129] #4472947
07/28/17 10:05 AM
07/28/17 10:05 AM
Joined: Jun 2017
Posts: 391
Western usa
Ammofirst Offline
Ammofirst  Offline
Joined: Jun 2017
Posts: 391
Western usa
Use it with confidence. I believe it is gender neutral

Re: Which oil for my turbo Saab? [Re: lbs129] #4472992
07/28/17 10:52 AM
07/28/17 10:52 AM
Joined: Jul 2017
Posts: 542
Texas (south)
FermeLaPorte Offline
FermeLaPorte  Offline
Joined: Jul 2017
Posts: 542
Texas (south)
0w-40 would be the best choice. Good one.


Always Mobil 1
2014 1.6L Nissan Versa Sedan, 5 spd, 5k OCI.
2011 3.5L Chevrolet Impala, Automatic, 5k OCI.
Re: Which oil for my turbo Saab? [Re: lbs129] #4472994
07/28/17 10:54 AM
07/28/17 10:54 AM
Joined: Jul 2016
Posts: 1,703
Jacksonville, FL
FlyNavyP3 Offline
FlyNavyP3  Offline
Joined: Jul 2016
Posts: 1,703
Jacksonville, FL
I think your choice of 0w40 is also right on the money. Keep doing what you're doing. No need to worry about the change in name of the M1 0w40.


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: Which oil for my turbo Saab? [Re: lbs129] #4473098
07/28/17 01:17 PM
07/28/17 01:17 PM
Joined: Feb 2009
Posts: 229
Pennsylvania
K23Turbo Offline
K23Turbo  Offline
Joined: Feb 2009
Posts: 229
Pennsylvania
M1 or Castrol Edge 0W40 European Formula

Re: Which oil for my turbo Saab? [Re: lbs129] #4473126
07/28/17 01:44 PM
07/28/17 01:44 PM
Joined: Jul 2017
Posts: 2
Sweden
lbs129 Offline OP
lbs129  Offline OP
Joined: Jul 2017
Posts: 2
Sweden
Thank you for your replies. The verdict seems to be that 0W-40 is the way to go. Can you also help me with my more detailed questions? :-)

Johan


1997 Saab 9000 2.3 Turbo running on Mobil 1 New Life 0W-40

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