deposits

Hi Folks, Has anyone ever seen carb deposits like the ones in this photo? I've rebuilt many carbs over the years but have never seen these chalky, yellowish powdery chunks of mystery crap. History: -- When I first tore down my carbs about four months ago, they had the usual brownish...

I just had a buddy change out my water pump/hoses on my 6.2 diesel and he called me while doing it and said my radiator has mineral deposits. He went on to say he would buy a new radiator if the truck were his.. My 85 Vmax runs hot and I'm guessing that's also due to deposits even though I did...

Today I finally got round to drop the old oil out of my motor. Shell Rotella-T 15W40, and the same is going back in. This lot went in at 41137 miles, and it's now at 44987 miles, so just under 4000 miles of use. The oil is dark but still looks pretty ambery in color. What worries me is the...