Leaks & rubber seals - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Leaks & rubber seals
Posted by Eiron [Email] (more from Eiron) on Fri, 6 Sep 2013 08:41:03
In Reply to: Oil Leak after 0W40 oil change / PCV #6 install, Tulsaab [Profile/Gallery]
, Tue, 3 Sep 2013 11:37:15
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An '02 with only 70k mi? If it were my car, I'd definitely run an application of Auto-Rx through it, since it's a candidate for both sludge & dried rubber seals. (Not that you have sludge, but the low miles make it more likely that it saw a lot of short trips, which is the type of driving more prone to producing sludge.) Auto-Rx will also restore the pliability & sealing ability of aged rubber seals (up to a certain extent), so some leaks will be diminished if that's their source.
Use a dual-rated oil of either Group II+ (Mobil Delvac 1300 Super, or Delo 400) or Group III (Rotella T6) as both the 'carrier' oil for the Auto-Rx application & the 'rinse' oil phases. Then you can go back to using the premium Group IV (Mobil 1) oil. M1 0W-40 is one of my favorites, along with M1 5W-40 & M1 "High Mileage" 10W-40. All three of these oils carry the more stringent European ACEA oil approvals for better shear resistance & better additive packages.
posted by 63.234.158...
Auto-Rx
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