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Discussion Starter #1
2015 Mustang 2.3L Turbo Ecoboost,
40k miles
Catless 3inch MBRP downpipe and MBRP Race catback
SR Performance Intake
Cobb accessport Stage3 Cobb tune)
UPR Dual Valve Catchcan

Car is burning oil pretty badly, when I’m driving you sorta smell it but you don’t see smoke but when I idle it builds up pretty well. Replaced PCV/Crankcase vent oil separator with new revised part number from FoMoCo. Checked intake side pipe, no oil in there. What do?

the most common answers I’ve been hearing is either blown turbo or bad valve guide seals.
 

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Worn piston rings can also cause blue smoke. I'd do a wet/dry compression test on the engine cylinders. This will tell you which cylinder(s) are bad and whether it's worn piston seals or not.
 

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Worn piston rings can also cause blue smoke. I'd do a wet/dry compression test on the engine cylinders. This will tell you which cylinder(s) are bad and whether it's worn piston seals or not.
I’ve done a compression test at my shop already and everything checks out there
 
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