What are the best Oldsmobile repair shops?
RepairPal Certified shops can diagnose and repair your 1998 Oldsmobile Aurora. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
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I pretty much figured it out. After unscrewing the caps one was smaller. So figuring the smaller one is low pressure
Yep you're right! ... Reckon it font matter but - Just so you'll know, the older 'R-12' systems were reversed .. Larger connection was the low side.
Ty for the info
You betcha!