4.7l dodge sounds like a diesel after synthetic oil change.

[Hohn]

Risk vs. Reward conundrum. Stay the course or try something new and possibly induce a problem?

Precisely. We don't know what we don't. As the ads say "past success is not guarantee of future results."
But on the other hand, what other than history do we have to go on?

 

[ehh]

Precisely. We don't know what we don't. As the ads say "past success is not guarantee of future results."
But on the other hand, what other than history do we have to go on?

Conventional oil every 5000 miles. This truck never made noises before on cold start. I was thinking because the new oil is thicker then the Conventional oil I changed is where the noise came from. It doesn't matter, over 200000 miles still don't burn oil. And recently retired the only place I drive it to is the lake to fish.

 

[ehh]

1) Your first post in 13 years??? I do believe that's a new record!!!

2) you went from a conventional oil to a synthetic already in this OCI, and that presumably would be of less vis at start-up. And now you want an even thinner lube? If thin oil caused the problem (and I'm not saying that I am convinced it did), then what makes you think using an even thinner lube would make the issue go away? (We'll assume you used the same vis grade for all OCIs.)

3) perceptions of sound are easily affected by many things, not the least of which are confirmation bias, but also ambient temps, etc

Been busy raising a family. They are grown and I'm retired. So I have time to come here now.