Thanks gentlemen! To answer you questions. Yes the ticking goes away post warm up and normal operating RPM ranges, but also intermttenly returns during these normal and warm running ranges. I've always used the standard 10-30wt quailty brands of oil. I'll plan to replace these O-rings per your sugge...

Are there speical tools required to adj valves. Eng B5254S. 85K miles Non turbo/Auto. Can I get info from you on whats needed to solve for mild intermitten valve train ticking :?: I'd like to attempt to solve myself if danger level isn't too great. Thanks for your time. Jeff in ABQ NM. Happy Holidays