I have a 2003 GMC Envoy XL that runs great! 151, 000 miles. But it makes a ticking noise only when it’s idling. I recently had an oil change. Any suggestions? I want to purchase Sea Foam but I’m unsure if I should add it to the gas verses the oil since my oil change is recent.
Engine ticking noise- can Sea Foam help? [SOLVED]
Hi Carla. If you buy one can, just pour half the can into your oil and leave it until your next scheduled oil change. The ticking noise is likely a valve lifter that’s sticking. Lifter noise is caused by sticky varnish that develops from old oil residue that build up in the crankcase over time. Sea Foam (or High Mileage for older engines) added to oil will work to reliquefy and clean away the varnish that’s causing the noise. Adding half a can to your Envoy’s oil every interval will clean away heavier residues and deposits that can cause lifter noise and oil flow restrictions. Easy to do!
If you like how Sea Foam works in your oil, you can buy more later to add to your fuel tank to clean fuel passageways and upper engine areas.