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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Since you're doing this might as well do that.

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      01-14-2013, 12:47 AM   #1
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Since you're doing this might as well do that.

07 335i 70k auto. Completely stock.

I am going to replace my water pump and thermostat. Also doing oil filter gasket, valve cover gasket and walnut blasting intake ports. I might do spark plugs depending on condition. I think they have 20k on them.

What else, any sensors, any upgrades, change to DCI, just remove the entire engine.

I figure I am saving just about 4 million, taking on the task myself.

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      01-23-2013, 05:01 PM   #2
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Tranny and rear differential fluid drain and fill? Recommended at 60K.
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      01-24-2013, 10:24 PM   #3
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Doing my water pump and t-stat too. Decided to do some gaskets and sensors while I was at it.

Originally Posted by Casca View Post
On the same note, I will replace the heat exchanger gasket as well as the oil housing one when I do my pump/t-stat.


Looks like the same type material, so probably the same problems......just not in an area where you notice.

Coming up with a list of different things to do at the same time that requires coolant replacement. So far:

Auxiliary fan switch

Coolant/Oil temperature sensor

Oil housing gasket

Heat exchanger gasket

Radiator flush

Visual inspection of all hoses, clamps and general area and re-service the coolant with OEM coolant......water pump and t-stat replacement to...
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