What happens when you check your oil waaaaay too many times?

How dirty can your cooling system be and still work?

We install pistons backwards - what will happen?

We make a liquid throttle cable - will it work?

We replace springs with hard silicone (and other stuff) - will it work?

We make a ram air intake for a Subaru - will it work?

We run a diesel on 100 octane gasoline - what will happen?

Can we make a Lada engine run in the other direction?

5 things you should NOT do when towing a car

We spray water onto brake rotors for cooling - will it work?

We make 4 wheels out of 12000 nails and go off-roading

How will toothpaste, scrubs etc. affect braking performance?

We replace tires with springs - are they better off-road?

We make the most expensive valves in the world

What actually happens when you overfill your motor oil? (w/ transparent oil pan)

Honed cylinders or mirror finish - which is better?

We use magnets as pistons - what will happen?

We cover a G-Wagen with sequin - how will people react?

We use rubber turf to make airless run-flat tires

We use our V6 tire spinner for target practice

4 to 8 stroke engine: what if you add 4 wasted strokes to engine cycle?

We build a wooden replica of a Mercedes G-Class

Self-healing rubber turf coating for a car (with torture testing)

Can you revive a dead car battery by inverting its polarity?

We make suspension with on-the-fly mechanically adjustable ride height

Yamaha cross-plane crankshaft conversion for a Lada - what will happen?

We make a nutty carriage on 47 inch wheels (cable reels)

We make a full size inertia car toy – how far will it roll?

Hummer versus Soviet UAZ - which is better off-road?

Changing the firing order from 1-4-3-2 to 1-2-3-4 - what will happen?