Hey mad,
Mine's not an oiler but I have had an engine check light probably every 2-3 months or more often depending on....fcuck knows?
I have a chip and occasionally give it some stick. Overtaking while towing, doing 1/4 mile time trials in the back blocks and sometimes just starting the car and putt putting down the street 200 metres has them come on for me????
I ignore them.....because
I told Mits about them and the gasbag service manager was so interested in telling me the rules and regs of warranty that it was of no issue (doesn't know about the chip). I pick the car up and ask what they found and they say either - what? or - no fault recorded - what drugs are you on???
I counter with - well if it's serious I'll bring it back totally f*cked because I will ignore it!
They say ......warranaty terms are....blah...blah...blah.
I have had hicko's smart gauge say it's a number 3 cylinder misfire once, so I keep putting it down to that
I would invest in a smart gauge or scan gauge and check it out for yourself.
P.S I'm not real clever, but for longevity. I would keep the EGR blanked, vent the crankcase (which most aren't doing - I think) and keep the wastegate stocko.
I would also get the best mother f*cking chip available...