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Practical automotive articles on maintenance, diagnostics, vehicle systems, buying used cars, tires and electric driving.

Diagnose Mazda RX-8 Engine Failure Systems

Diagnose Mazda RX-8 Engine Failure

How to diagnose a Mazda RX-8 rotary engine that won't start, runs poorly or has failed: likely causes, checks to make, what results mean, and when to stop driving.

Diagnose Chevrolet Silverado no-start Systems

Diagnose Chevrolet Silverado no-start

A practical guide to diagnosing a Chevrolet Silverado that won't start: separate no-crank from crank-no-start, run basic checks, and know when to stop and get professional diagnosis.

Systems

Transmission fluid vs engine oil

Transmission fluid can look like oil because both are oil-based. Learn how they differ in color, feel, smell and purpose, how to tell which one is leaking, and why they are not interchangeable.