Posted to Technical Theory Forum on 7/31/2014
Below is our official statement on Interference vs.
Please note that we publish whether a specific vehicle has
an Interference or Free-Running engine on our website. Just
navigate through the Year, Make, Model and Engine Size
prompts and we will inform you of the Recommended
Replacement Interval as well as whether the engine is
Interference or Free-Running.
Please visit navigates.gates.com to try it out.
"Automobile engines can be classified as either Free-Running
or Interference, depending on what occurs if piston/valve
synchronization is lost. Interference engines usually
sustain damage if synchronization is lost. Damage can occur
to valves, pistons, or heads, and in some cases, completely
ruin the engine. Most import (with higher compression
engines) and most car and light truck diesel engines are
interference. To avoid costly engine repairs, follow the
auto manufacturers' mileage replacement recommendations or
we recommend timing belt replacement at around 60,000
Manager/Technical Information Specialist
Denver, Colorado, USA