Compression Check low oil pressure Now What?

StrokerScamp said

I don't know about the no flush advice. I've done a ton of them through the years and never had one single problem. The key is making sure you get it up to temperature and leave it there long enough to break everything down good. John Balkum used to run an old school service station in Macon years ago. He would actually fill the crankcase with diesel fuel and let the engine idle for about an hour if there was sludge buildup. It worked very well.

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I'm gonna have to disagree with most of this. Flushing is always a risk. Bottom line! If there's sludge in the motor(Usually up in the heads under the valve covers) then it will end up clogging the Oil pickup. A quick check under one of the valve covers will tell the story about sludge. Pop off a valve cover and if it looks clean as a whistle under there then it's probably more of a Bearing/worn pump situation. If it's all gunked up then there's a strong chance the Pump screen is clogging up. If there's all gumk under the Valve cover then a flush will just clog up the Pump screen even more. If the screen is clogged than it's best to just change the Pump & Screen and don't disturb the sludge at all. Don't be tempted to scrape anything under the valve covers. It'll bite you in the ***.