I have looked at various threads but haven't quite come across this yet. Can any tell me the new layout of vaccines hoses when they have installed a oil catch tank?
I think part of the benefit of the oil catch can is to improve the combustion. The more crap, or oil vapour you have entering the combustion, the lower the quality of combustion. In principle, it can help to avoid some det issues but I don't know how effective it is on the Megane. It will certainly improve the emission from the exhaust though.
I've a catch tank to try stop oily vapour contaminating the turbo blades as that's what the vapour hits first, after that there's the IC but not really enough to gum that up yet.
Just for reference, but I have taken two turbos off my engine. One after 45k miles, and one after 10k miles, and neither had oil crap on the blades. The intake valves were minging, which could be the oil breather.
Alternatively I clean my turbo blades twice year and they're coated in black thin film of dust/oily substance
You'd think the in valves would be cleanest as they have constant flow of fuel over them, such are the mysteries of engines
That's what I would've thought too. Certainly on the N/A engines I have had in the past this is the case. Seems to be a trait of this engine. The oil film you see on the blades, I presume that's only on the exhaust/hit side?
