Re: Does the oil cooler ever drain? - Saab 9000 Bulletin Board - Saabnet.com


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Re: Does the oil cooler ever drain?
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Posted by sam96CS [Email] (#852) [Profile/Gallery] (more from sam96CS) on Sun, 11 Feb 2018 12:01:01 Share Post by Email
In Reply to: Re: Does the oil cooler ever drain?, Simon S, Sun, 11 Feb 2018 09:03:57
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Thank you! I had it almost as backward as humanly possible.

The official documentation in owners manuals continues to surprise. As you posted, the U.S. version of the '95 manual specifies for an oil and filter change 4.7L, 5.1 Qt. If you search online you can find a .pdf of a '95 9k manual, ordering number 40 77 42 with GB inside an oval on the back cover. I assume GB inside an oval designates Great Britain. This '95 manual specifies 5.0 liters for the 2.3L engine. Probably there were differences among the B234 engines sold in 9ks at various markets. The GB manual also says, "API Service SG and CCMC G4 or G5" which is a clearer call for synthetic oil than I think can be found in the '95 owners manual for the US/CDN market. This is the only manual I've seen for 9k cars with 2nd generation B234 engines that specifies the oil should be allowed to drain "for at least ten minutes".

Another surprise popped up in a .pdf of an English language manual for a '96 Saab 900, some of which (the 900S model I think) were sold with normally aspirated 2nd generation B234 engines. The manual I found isn't the US/CDN manual. All the weights and measurements are metric. It specifies for an oil and filter change 4.0 liters, and I assume B234 engines made for 900 engine bays had different oil pans and probably other differences. The surprise is that it also specifies 4.3 liters for oil changes including an oil cooler. If I understand correctly the NG900 models with 2.3L engines didn't have turbos. Maybe they added oil coolers for locations like Texas with high ambient temperatures. It is clear from comments at Saabnet's NG900 & OG9-3 forum that extra steps are needed to drain the oil cooler. The Car Care and Maintenance section of the owners manual says to change the oil and filter as specified in the Service Programme, but the manual doesn't say anything changing oil cooler oil. Maybe that information is in a separate Service Programme booklet. The owners manual said nothing about B204 engines and V6 engines with oil coolers.

Thanks again for clarifying the operation of the thermostat and oil cooler circuit.
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