Tim Bob, Technical Reviewer

Tim Bob is a motorcycle mechanic with 26 years in the trade and 35 years riding. He works at Tim Bob Motoworks.

He reviews MotoGearRater repair guides for technical accuracy.

What technical review means here

A repair guide on this site carries a reviewer credit only when a working mechanic has read it. Guides that have not been through that check say so in plain words at the foot of the page, rather than staying silent and letting a reader assume otherwise.

Review covers the procedure and the reasoning behind it. It does not add model-specific numbers. MotoGearRater publishes no capacities, no torque figures and no service intervals, because those live in the service manual for your machine and nowhere else. Every guide points you back to that manual for them.

Guides reviewed by Tim Bob

• How to Change Motorcycle Oil

• The Drain Plug Oil Change, Step by Step

• Changing Oil With a Vacuum Extractor, and When It Is a Bad Idea

• Dry Sump Oil Changes, and Why the Oil Is Not in the Engine

• Engine, Primary and Transmission, the Three Fluid Change

• Spin On or Cartridge, How the Filter Changes the Job

• Warm or Cold, When to Drain Motorcycle Oil

• Drain Plugs, Crush Washers and Stripped Threads

• What to Do With Used Motorcycle Oil

• JASO MA, MA2 and MB, What the Classes Actually Mean

• Can You Use Car Oil in a Motorcycle?

• What 20W-50 Actually Tells You, and What It Does Not

• How to Check an Oil Actually Meets Your Bike’s Spec

Corrections

If you find something wrong in a guide Tim has reviewed, tell us and we will fix it and say what changed. Write to us through the contact page. Our full policy is in our editorial standards.