in your garage to make future searches easy.

Condition Value
expand_moreDiesel exhaust gas values
expand_moreCut-off control speed
BMW diesel straight-6 2.4 L M21 D24 (246TB) 114 HP 52005400 rpm
expand_moreMaximum K-value
expand_moreGeneral exhaust gas values
expand_moreIdling speed with manual gearbox
BMW gasoline straight-6 2.0 L M20 B20 (206KA) 127 HP 720800 rpm
BMW gasoline straight-6 2.5 L M20 B25 (256K1) 168 HP 720800 rpm
BMW gasoline straight-6 3.0 L M30 B30 (306KA) 185 HP 750850 rpm
BMW gasoline straight-6 3.4 L M30 B34 (346KB) 208 HP 750850 rpm
All other modifications 700800 rpm
expand_moreMinimum engine oil temperature at VET
All other modifications 176°F
expand_morePetrol exhaust gas values
CO content at idling speed 0.21.2 %
Test values apply to the measurement in front of catalytic converter
expand_moreCO content at increased idling speed
All BMW gasoline straight-6 2.0 L M20 B20 (206KA) engines 0.3 %
All BMW gasoline straight-6 2.5 L M20 B25 (256K1) engines 0.3 %
All other modifications 0.2 %
expand_moreIgnition time
All BMW gasoline straight-6 2.0 L M20 B20 (206KA) engines -10°00'±5°00' - before TDC + after
TDC
All BMW gasoline straight-6 2.5 L M20 B25 (256K1) engines -10°00'±5°00' - before TDC + after
TDC
expand_moreIncreased idling speed
All other modifications 25003000 rpm
Lambda value 0.971.03 λ
Maximum HC content at idling 100 ppm

To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by BMW.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1988 BMW 5 Series Sedan user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and BMW warranty policy for your region. In some regions DIY service may invalidate your warranty.

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow BMW 5 Series Sedan service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 1988 BMW 5 Series Sedan you're not only saving money, but also also improving your technical skills and learning something new.

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