MMO has solved the tapping problem for me. I put some in the crankcase and some in the gas tank every once in a while. As far as I can tell, it helps dissolve the varnish and carbon that build up between moving parts over time.

Thank you for all your help, I will change the oil with Mobile 1. One thing I forgot to mention, the noise first occurred after driving on a long trip about 2,000 miles and just after an oil change with Quaker State 5W50. It was only after I arrived at my destination that I noticed the ticking sound on cold engine warm up and checked the oil only to find it was overfilled by about one quart. Using an oil extractor I removed just over one quart to get to the correct level. I am not sure if the high oil level or the long drive had anything to do with it? I like to have the oil level just under the full mark after it has sat for five minutes at full operating temp. It is longest trip I have taken in this car, what a wonderful
long distance car.

Mike

Brian, Mobil Delvac is an oil for diesel engines ... sorry to cause any confusion.

Marvel Mystery Oil (MMO)
 

We swear by the stuff here on the farm. Use it in cars, tractors, even airplanes. I would definitely try some MMO - about 1 pint - and see if that helps.

$.02

-Mike

i would say the overfill is prob unrelated

tom w

the pinging if that is what you have traditionally is from poor fuel quality or over advanced iginition timing.

the last car i noted it on was my euro 280e when run with regular instead of premium

tom w

But I've ALWAYS run premium... 91 or 93 at all times. I am running 91 with a bottle of techron and I still have the ticking at acceleration.:confused: