Project RS

[ScottyB]

little maintenance update with some oil analysis nerdery to see how the engine fared. full track weekend plus daily driving plus road trips as of late in 90+ degree heat. i was concerned about the chromium (that's piston ring wear) and silicon from last time but both are way down. i think i just had a crappy air filter seal. This is Mobil 1 10W-30 High Mileage...I like it a lot and will probably consider it for future track days, but the car really likes to drink it for some reason. For daily stuff i might stick with the good old Rotella T6 because its so damn cheap.

there's no secret that adding 2.5 quarts of fresh oil to the sump plus a very short oil change interval (the TBN is saying i could probably get 8k mile runs out of this safely) skews readings a bit but the wear metals are looking good considering the hard driving. the car drank a quart during the track weekend and the rest in daily driving. i don't know where it goes....it doesn't smoke, makes good power, so i just check the level every week and keep feeding it.



one thing to note is that this oil is rated ACEA A3. i specifically sought the M1 High Mileage stuff out as this is almost the only 30 weight formulated to this rating. basically anything that's rated with this spec is highly resistant to shearing down out of grade (think extended, high heat, high load use on the autobahn for instance) to a thinner less protective oil over long drain intervals. i'd definitely recommend looking for this rated oil if you intend to run the car hard and want to keep the oil in use for a while - think non-dedicated track car or daily that you lay the whip to fairly often.