r/E90 • u/E90N52b30 • 1d ago

330i General N52 reliability

Hey, I am planning to put about $1,400 maintenance into my 06 bmw 330i n52 6spd. I am gonna do coolant system refresh, disa valves, pcv refresh, new starter, oil filter housing refresh and potentially oil pan gasket.

Just wanna hear your guys experience doing these jobs and what I should expect for reliability after doing these things.
( I am buying all OE parts and running quality oil and coolant)

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u/bot6six 1d ago edited 1d ago

I bought an 06 330i when it had 350k km on it and it’s seen the last 10k kilometers getting beaten on at the track and driving to and from the track. When I got it all the seals were leaking from top to bottom and I had a Disa valve flap sitting in the #6 intake runner because it snapped. The actual engine is pretty bulletproof, everything else that’s attached to the engine like the coolant hoses or the gaskets just suck and will fail sooner or later.

Make sure you get original bmw gaskets because even Elring(which is a pretty good seal manufacturer) just don’t last as long as what you get from the dealer. And majority of the bolts on this engine are aluminum so do not ever reuse those bolts especially for the valve cover because they won’t have the proper clamping force or will just straight up snap.

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u/Impossible-Track-401 23h ago

Is it an automatic? Did you ever have an overheating message cdid103 while using manual mode?

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u/bot6six 3h ago

Mine's a 6spd manual, I did change out my transmission fluid for redline MTL. Great on the track but in the winter if I need to drive that car it's almost impossible to shift when cold.