🩸 Haynes’ World: Roadster Oil Change + Offer Code!

From: Haynes - Saturday Jul 15,2023 07:00 am

Haynes' World is a regular feature that takes a look at what the staff at Haynes are doing with their vehicles. This time, Martynn’s roadster needs a basic service but a regular trolley jack just won’t do.

Car: BMW Z4
Owner: Martynn Randall

I don’t do many miles in my BMW Z4. It’s not because I don’t like it, or that it’s particularly bad on fuel. It’s simply because I have quite a few other transport options in the garage(s).

Consequently, I don’t stick to the BMW recommended intervals for engine oil and filter changes. Instead, I change these items once a year.

The process is pretty simple, but there are a few important details to observe.

A low-profile trolley jack is needed; because of the Z4’s low stance, it’s not possible to get a normal jack under the front of the vehicle to make use of the reinforced jacking point in the centre of the front subframe. With the low-profile jack, it takes only a few minutes to raise the vehicle and support it securely with axle stands positioned under the jacking points, under the front sills.

Handily, my drive is on a slight slope. So with the rear wheels at the top, after I’ve raised the front of the vehicle, it’s about level.

With the engine warm, slacken and remove the oil filter cap. This allows the oil in the filter housing to drain into the sump.

The 3.0 Si engine holds 6.5 litres of oil. Make sure the drain container can hold this amount. The first time I drained the oil, I didn’t.

There’s no oil level dipstick on this engine; the new oil must be measured out, then added after the sump plug and washer and new filter and seals have been fitted. It’s not possible to rely on the vague oil level indicator built into the instrument cluster because it reports the level as ‘OK’ from about six litres onwards.

Oh, and pour the oil in slowly. Do it too quickly and the funnel will overflow and the oil goes all over the exhaust manifold – ask me how I know!

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