WHAT BRAND HYDROLIC OIL FOR 2002 BMW CONVERTIBLE TOP

Look under the back seat to see if there is any oil . Sometimes the hydrolic rams that move the top will leak fluid. If there is oil refill the fluid may help get the top open, but the ram will need to be replaced.

oil it lithium oil on every hing while top is closed and open top and close a couple time and then wipe off

THe microfilter is just the filter. The oil filter is available off the shelf at advance auto parts. It's the original equipment German brand, "Mann". It's about $12.00. The price of $300 you were quoted is more the range for a transmission oil change, not engine oil.

Don't be confused about the word"microfilter". Again, it just means the filter, same as any other car.

its not a screw on type its inside a housing ,but sorry i cannot remember weither on the top right hand side ,it will have something like a 22/24 mm nut shape on top of the plastic housing

My window on my vert was doing that. Short of opening up the door and trying to do it myself, I took it in to the BMW guys at Bimmerhaus. They readjusted the window for me and it was good to go. Pretty much cost 1 hour of labor and a couple of clamps. $100+ or thereabouts.

Change your engine oil with 10W30 every 4,000kms. Change your transmission oil with Honda MTF every 6 months. Change your Differential Oil with 75W90 every 6 months. Check the tire pressure every month. Treat the top with a quality vinyl top protectant often (I use Ragg Topp brand). Wash & wax painted surfaces often. Treat the leather interior with UV protectant designed for convertible top cars (I use Wolfgang brand).

That's all I can think of!

On a z4 the whole top has to be removed to add oil. The hydraulic pump is connected to the top in the drivers side b-pillar; Usually the convertible top motor will end up being submerged in water because the drains get clogged. I would recommend taking the vehicle to your local bmw dealership

Problem solved via fixya,works like new may thanks.

you should be able to use power steering fluid or automatic transmission fluid.

Hi

The lifters can be cleaned by getting the engine nice and hot and then adding an engine flush to the oil and leaving the engine running at a high tickover for about 15 to 20 minutes, and then giving the car an oil and filter change.

Are you sure its the tappets and not the timing chain?

Regards

Geordie