 At Hot Shot Secret, we share the science behind common diesel problems. For example, stick shit. Engine oil can break down under extreme heat, leaving behind varnish, a carbon-based deposit that creates drag on the engine's moving parts. This sticky friction is stick shit. Symptoms include a rough idle and the loss of fuel economy and performance. Hot Shot Secret Stick Shit Eliminator is formulated to be left in the engine. It works as you drive. Stick Shit Eliminator is available at truck stops, tractor supply, O'Reilly's Auto Parts, and online at hotshotsecret.com.