20W-50 Penzoil sg rating

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I just found 1 quart of Penz SG 20W-50. This was in my basement so I have no idea how old it really is, the bottle has not been opened.
I have a 1988 subaru Justy with over 252,000 miles. What do you all think about using this oil with auto-rx and 10w-30 valvoline, the oil capacity on this car is just under 3 quarts, the car has a sludge problem and I will be only driving 1000 miles on this application.
Thank you.
 
Sounds OK to me, I'd use it. But I'd run that Auto-Rx the full 1500 miles.
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Thermactor
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Member # 9355

posted 22 August, 2006 11:42
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I'd pour it out into a cup and put a wick in it. Because it is WAX and will sludge up your engine. You've been warned!!
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Posts: 116 | From: San Marcos, CA | Registered: Oct 2005 | IP: Logged |
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