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How to Remove a Stuck E30 M20 Oil Filter From the Top (No Lift Needed)

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October 26, 2026
Proxxon rotary ratchet, Tekton locking extension and 76mm 14-flute oil filter socket

With an E30 at standard height, or even slightly lowered, an oil change is possible without lifting the car at all. From the front, you can reach the drain bolt with the car on the ground. Then with the setup below, you can remove even the most stuck oil filter from the top. That...
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Tools for Changing E30 Front Control Arms Faster

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October 26, 2026
Swivel socket on an extension reaching the E30 control arm center ball joint nut from the top

Changing the front control arms on an E30 isn’t a hard job, but a few steps can eat up a lot of time: getting the center ball joint nut off, getting the ball joint out of the subframe, and pressing the new bushing and its carrier onto the arm. These three tools make the...
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BMW E30 Blower Motor Replacement DIY Guide

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August 16, 2026

Step 1: Remove the following fasteners and lift the front bulk head panel up and out. * Some 1987 E30s are equipped with fuel-cooling lines that run across the bulkhead and connect to the A/C lines. Neither the metal lines nor the rubber hoses need to be removed. Simply release the fuel-cooling lines from...
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E30 Windshield Washer Spray Jet Adjustment

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August 3, 2026
Photo of a BMW E30 windshield marked with the washer jet aiming distances 258, 405, 460, 265, 310, 473, 490 and 285 mm

Aiming the washer jets by eye usually ends up with the water landing too high, too low, or blowing clean over the roof once you are moving. BMW gives eight dimensions for it under procedure 61 71 504 – they locate four spray targets on the glass, two per jet. The method: Transfer distances...
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Baum Iscan/CS2000/Vscan OBD1 User Manuals (BMW, Mercedes, Volvo, VW, AUDI)

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September 21, 2026

Here are scans of the instruction manuals for the Baum Tools iSCAN, a hand-held diagnostic scanner for European cars....
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Factory BMW E30 Pioneer KE81 ZBM and KE83 ZBM Radio Owners Manuals

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September 20, 2026

Here are the PDF scans of two factory radio manuals. One is for the Pioneer KE-81 ZBM, and the...
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E30 A/C System Oring Sizes

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August 16, 2026

For the E30 A/C system, the main line-fitting O-rings are standard SAE sized. BMW confusingly identifies them by the...
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BMW E30 Motronic 1.3: Comparing 173 vs 525? (Work in progress)

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August 14, 2026

Binary comparison of Bosch Motronic 1.3 173 and 525 ECUs, including coolant enrichment, cranking fuel and ignition, and every...
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