THE MECHANIC'S QUICK REFERENCE
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Torque values, firing orders, fluid capacities, trouble-code diagnostics, calculators and vehicle comparisons—organized so the application and source stay visible.
480Specification pages
21Vehicle makes
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View all categories →Browse by specification
Torque SpecsLug nuts · Head bolts · Manifolds→Firing OrdersV6 · V8 · Diesel · Classic→Oil & Fluid CapacitiesEngine oil · Coolant · Transmission→Spark Plug GapsGap specs · Tolerances · Types→Bolt Torque SequencesStep-by-step · Patterns · Diagrams→Timing & IgnitionTiming marks · Advance · Specs→Valve SpecificationsClearance · Lash · Dimensions→Mechanical DiagramsExploded views · Assembly · More→Vehicle SpecificationsTowing · Tire pressure · Capacities→Engine SpecificationsDisplacement · Bore · Output→Brake SpecificationsRotors · Pads · Caliper torque→Electrical SpecificationsCharging · Starting · Wiring→Performance SpecsHorsepower · Torque · Ratings→
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All comparisons →Compare full-size trucks
DIAGNOSE BEFORE REPLACING
All 489 trouble codes →Trouble codes, across the vehicles we cover
P0300Random/Multiple Cylinder Misfire DetectedFord F-150 5.0L · Symptoms, scan data and test sequenceP0171System Too Lean (Bank 1)Ford Escape · Symptoms, scan data and test sequenceP0171System Too Lean (Bank 1)Ford Explorer · Symptoms, scan data and test sequenceP0300Random/Multiple Cylinder Misfire DetectedFord Fusion · Symptoms, scan data and test sequenceP0300Random/Multiple Cylinder Misfire DetectedFord Mustang · Symptoms, scan data and test sequenceP0300Random/Multiple Cylinder Misfire DetectedFord Focus · Symptoms, scan data and test sequenceP0300Engine Misfire DetectedChevrolet Silverado · Symptoms, scan data and test sequenceP0300Engine Misfire DetectedChevrolet Equinox · Symptoms, scan data and test sequence
CALCULATE, DON'T GUESS
All 63 tools →Tools and calculators
Tire Size CalculatorOverall diameter, sidewall, circumference and revs per mile from any metric or flotation size.Gear Ratio CalculatorCruising RPM from axle ratio and tire size, plus the regear that restores stock behaviour.Wheel Offset CalculatorHow far a new offset pokes out or tucks in, with backspacing conversion.Compression Ratio CalculatorStatic compression from every volume above the piston, itemised.Quarter Mile & 0–60 CalculatorET and trap speed from the drag-strip formulas, plus an honest 0–60 estimate.MPG & Fuel Cost CalculatorReal MPG from a fill-up, then cost per mile, trip cost and tank range.Brake Pressure CalculatorThe full chain: pedal force to line pressure to clamp force to torque.Bolt Torque CalculatorStarting torque from bolt grade, size and friction condition.
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Precision matters. Always match the model year, engine code and fastener before beginning service. Critical values should be confirmed against current manufacturer information.