I was under the impression ticking on cold-starts was from oil starvation, metal against metal sort of deal...? Wouldn't a thicker oil make it longer for the oil to go where it needs to go?
Originally Posted By: marcre
I'd go with a Seafoam treatment and see how that does. It cleared up a similar noise for me on an Isuzu Rodeo before.
This seems like a good idea, measure out 1.5 oz. of Seafoam for each quart of oil in your crankcase, and run that in the crankcase for a day or two, keep a light foot, just to let it circulate, then go get your oil changed (go cheap, like generic supertech or whatever). Note: the can says it can be safely used in the oil for 3,000 miles, but to "monitor" the oil for darkness at each fill-up, and to change before the 3k if you notice the dip stick getting darker.
Also, I've read previously on these forums some "filters" are more susceptible to this noise on cold starts...I think I recall a post by a person who was using a Supertech filter at one time, so you could also experiment with different filters too, well, different brand anyways.
I had, what I think was a similar issue in my Rio, and Seafoam fixed it after the first day. the second morning the noise under the hood was gone, and I then went in for the oil change (probably 50 miles with the seafoam in the crankcase).