in your garage to make future searches easy.

Condition Value
expand_moreAir intake system
expand_moreIntake manifold
All Opel gasoline straight-6 3.0 L C 30 SE engines 16.23 lbf⋅ft
Replace screws and nuts.
All other modifications 25.81 lbf⋅ft
expand_moreCylinder head
expand_moreCamshaft bearing
First stage 3.69 lbf⋅ft
Second stage 7.38 lbf⋅ft
All other modifications 5.9 lbf⋅ft
expand_moreValve cover
All Opel gasoline straight-6 3.0 L C 30 SE engines 14.75 lbf⋅ft
All other modifications 5.9 lbf⋅ft
expand_moreEngine block
Connecting rod bearing 33.19 lbf⋅ft
expand_moreCrankshaft central screws
First stage 147.51 lbf⋅ft
Replace and lightly oil the screw.
Second stage 50°
Third stage 15°
All other modifications 88.51 lbf⋅ft
expand_moreCrankshaft pulley
3.0 24V with gasoline straight-6 3.0 L 201 HP at 6000 RPM, 270 N⋅m at 3600 RPM engine (1989.9–1993.9) 18.44 lbf⋅ft
expand_moreFlywheel
First stage 40.57 lbf⋅ft
Replace screws and nuts.
Second stage 30°
Third stage 15°
All other modifications 44.25 lbf⋅ft
Retap thread in holes and use new screws.
Main bearing 81.13 lbf⋅ft
expand_moreEngine control
expand_moreCamshaft timing gear
First stage 66.38 lbf⋅ft
Replace screws and nuts.
Second stage 60°
Third stage 30°
All other modifications 18.44 lbf⋅ft
expand_moreChain tensioner
M24 44.25 lbf⋅ft
M8 14.75 lbf⋅ft
All other modifications 36.88 lbf⋅ft
expand_moreEngine lubrication
Oil drain plug 33.19 lbf⋅ft
expand_moreOil filter housing
All Opel gasoline straight-6 3.0 L C 30 SE engines 11.06 lbf⋅ft
All other modifications 14.75 lbf⋅ft
expand_moreOil sump
All Opel gasoline straight-6 3.0 L C 30 SE engines 14.75 lbf⋅ft
Clean the thread and use screw-locking compound.
All other modifications 5.9 lbf⋅ft
expand_moreEngine management
expand_moreKnock sensor
3.0 24V with gasoline straight-6 3.0 L 201 HP at 6000 RPM, 270 N⋅m at 3600 RPM engine (1989.9–1993.9) 18.44 lbf⋅ft
Lambda sensor 22.13 lbf⋅ft
expand_moreExhaust system
expand_moreExhaust manifold
All Opel gasoline straight-6 3.0 L C 30 SE engines 14.75 lbf⋅ft
Replace screws and nuts.
All other modifications 25.81 lbf⋅ft
expand_moreIgnition system
expand_moreSpark plugs
All Opel gasoline straight-6 3.0 L C 30 SE engines 18.44 lbf⋅ft
All other modifications 29.5 lbf⋅ft

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1991 Opel Senator 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 Opel 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 Opel Senator 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 1991 Opel Senator you're not only saving money, but also also improving your technical skills and learning something new.

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