Originally Posted By: BuckyB262
I just purchased a used 2006 Saab Aero v6 2.3T and my manual says to use synthethic oil that has the LL-A-025 rating. Well, Amsoil has 3 that have this spec. The SS, XL and OE. I'm a bit of an old schooler and have always used synthethics when changing my oil at 5000mile intervals. Now this newer Saab says 10000 miles or 1 year. To me that is way too many miles for an oil change. I know I know we have such better oil now but it's hard to change when one has such good success with 5K miles. I've had bad experience with Mobil 1 running 10K miles before an oil change. But, if I was gonna change my oil every 5000 miles would it really make a difference which oil type I use? The SS is the highest price oil and the longest oil change intervals but the XL looks like it has good life but is less expensive that might make sense to use and drain every 5000. The OE might be a to low of a grade but changing at 5000 mile might be a very good alternative. What do you think?
Hey BuckyB262 – you’re right, just “extending” oil drains simply because you are using a synthetic can be problematic if consideration isn’t also given to the type driving that will be done during that oil drain interval (towing a boat? Shorter stop-and-go driving? Long highway miles? Etc.). Having that said, motor oil technology has advanced over years. Specifically, Pennzoil Ultra Platinum 5W-30 with PurePlus Technology meets your Saab GM-LL-A-025 synthetic oil specification, and is a full synthetic oil that has been developed and formulated for OEM-specified oil drains.
While we would recommend that you follow your OEM manual for the type of oil to use (synthetic), the specification required (GM-LL-A-025), and the oil drain interval that you should subscribe to – we would also be remiss if we did not recommend the use of used oil analysis to verify the oil drain interval that you decide on. For example, perhaps you could change your oil at 5,000 miles, and then check the condition of the used oil with a certified oil analysis lab. If the condition of the oil still looks good, perhaps you go 8,000 miles during your next oil drain....then change and check the oil, etc. This kind of scientific step-up of your oil drain does two things: 1) not only does it put your mind at ease, with regard to your oil/engine condition while you determine your appropriate oil drain, but 2) you can scientifically study your oil/engine condition, which will take into account the driving conditions during that oil drain. Hope this helps! - The Pennzoil Team