George,
You wrote in another thread that the truck was using a lot of fuel. If it was very excessive, the lifter noise may be due to oil dilution caused by unburned fuel getting past the rings into the crankcase. Has the oil level increased? Does the oil smell of gas? If so, the diluted oil no longer has sufficient viscosity to prevent lifter collapse. Look at this:
https://www.azom.com/article.aspx?ArticleID=16891
It may be that all you need is an oil change as long as the excessive fuel use has been fixed. If not, take care of it quickly. Excess fuel can cause a lot more damage than just thin oil and noisy lifters.
Originally Posted by FMS88
check out the oil change products I used here: (POST # 1786) http://www.mightyram50.net/vbulletin...6664#post76664
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