malibud Posted July 2, 2015 Share Posted July 2, 2015 So is this ok .. L28et forged balanced set up unknown miles built about 10 years ago. I put on a mechanical gauge and at cold idle I am about 12 psi and hot idle around 8-9 idles at 800 rpm as my rpm goes up I get more psi 20 psi = 2000rpm 30 psi 3000 rpm so on The idle had me a bit worried dont want to burn up a new borg Warner turbo . Oil synthetic 10w/30 can I go to 20w 50 or is too thick for the turbo Are the #s ok or am I looking at new bearings ? thanks DC Quote Link to comment Share on other sites More sharing options...
johnc Posted July 2, 2015 Share Posted July 2, 2015 You're fine. Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted July 2, 2015 Share Posted July 2, 2015 That sounds normal. Granted I was using 20w-50 on the stock turbo. Quote Link to comment Share on other sites More sharing options...
malibud Posted July 2, 2015 Author Share Posted July 2, 2015 good to hear thanks .. Quote Link to comment Share on other sites More sharing options...
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