Inline 6 engine noise??

[jhurgin]

So I have read…and heard first hand unfortunately, that the inline 6 is quite a noisy engine. It's quiet as can be but once 3k miles comes around after an oil change it starts to sound a bit "rough". Is this something that others have experienced and if so does this vehicle need a bit more standard maintenance than other vehicles. any info is much appreciated. thanks in advance.

[navigator]

I think most folks that follow the OLM get 7-10k miles on conventional oil.
I change mine about every 7500 with synthetic.
I have a little vibration at idle but no noise.

[jhurgin]

hmm ok. I'm not sure what I'm experiencing. I've talked to a few Chevy mechanics and they have said these engines do experience some engine slap which sounds like a bottom end issue but they said you can have that noise and you'll get another 100k out of it. just curious what anyone else has experienced. thanks

[djthumper]

no problems like that with mine.

[DirtyBacon04]

Same here. No noises like that. I get a somewhat heavy vibration at idle, but i know its motor mounts. Just too lazy to change them.

[Edubarajas]

Same here sometimes I forget it's even on that's how quite it is!

[jhurgin]

once it's up to temp it's as quiet as can be. Like one of you said, I sometimes think its shut off at a stop light. just thought i would ask. thanks

[blazinlow89]

Same here. No noises like that. I get a somewhat heavy vibration at idle, but i know its motor mounts. Just too lazy to change them.

Mine needs them replaced, however I have been suffering from similar symptoms lately. Lazy, broke and its been too cold.

As for engine noise, the only thing I hear on startup is the roar of the fan. After about 20-30 seconds it goes away and I have some lifter noise. It is more prevalent in the winter, and typically quiets down after a few minutes. Some mornings it can also sound like a powerstroke, it depends on the temps and I attribute that to a leak at the exhaust manifold.

I will say I hear more lifter noise now using Mobil 1 than I did when using Royal Purple. I typically follow the OLM for oil changes, and that has been anywhere from 10k-14k miles. I switched to Mobil 1 as it was cheaper and I figured hell it is highly recommended. I will not be using it again.

[KingBird]