NO ZINK IN THE MOBILE 1 OIL ANYMORE - ZR-1 Net Registry Forums

WB9MCW · 02-14-2007

DAW THIS ON THE NET SERV AND THOUGHT IT WOULD MAKE AN INTERESTING THREAD FOR COMMENTS HERE---WHAT DO YOU THINK/KNOW ABT THIS ISSUE???

Has Anyone read up on the effects that the removal of Zinc Phosphate from oil is having on engines. We had a speaker at my local corvette club (Corvette Club of Delaware Valley) meeting speaking about this. Evidently the federal government has mandated the zinc removal and it is causing engine problems. This particular gentleman was running diesel truck oil in his cars in 2006 because it still had it but is being removed per mandate in 2007. He is now running Comp Cam break-in additive (has Zinc)in his oil. He has older Corvettes and various other cars (Ferrari's, etc.) so Synthetic oil is not involved.
Is anyone familiar with this and what about synthetic (Mobil 1)??

This is from memory so it is a bit vague. A year or so ago there was
a thread here that discussed this topic related specifically to Mobil 1's
New 'Advanced' formula (zinc eliminated). The discussion at that time
indicated that some people (as I recall Hib offered some insight at the
time) were using Mobil 1 motorcycle specification oil which was supposed
to retain the zinc at that time. Also it was mentioned that Mobil 1,
15-50 weight oil retained the zinc phosphate additive . I use Mobil 1
combined 15-50 with 10-30 weight which seems to help with start up chain
rattle and purchased a large quantity of the "old" formula 15-50 to
benefit from the zinc content. (Mixed weight oil is a personal decision,
not OEM supported and subject to debate among members of this list. This
is not a recommendation). There was good information in that thread and
you may benefit from an archive search or recollections from some that
have a better memory. John R Sullivan '91 Polo Saddle #283 Original
owner.

My understanding from this discussion is zinc is no longer in the Motorcycle oil and we all should be looking for a suitable replacement. I will check out the archive. I must have missed that thread

I found this information - I think it was also mentioned in a
relatively recent issue of either Vette or Corvette fever. It seems
to talk mostly about older flat-tappet engines.

"...reduce the amount of ZDDP (zinc dialkyl dithiophosphate) in
street-legal, gasoline-engine motor oils. After all, they weren't
needed with modern roller lifters and overhead-cam followers. The
reduction first started in the mid-'80s, and it has been a gradual
process, but the latest API SM and GF-4 specs have reduced ZDDP
content to such an extent that the new oils may not provide adequate
protection for older, flat-tappet-equipped vehicles running nonstock,
performance cams and valvetrains.

http://www.hotrod.com/techarticles/e...ech/index.html

SO DOES IT MEAN WE DO NOT HAVE TO WORRY ABT THIS ISSUE IN THE LT-5??? OR DO WE???

MY GUESS IS WE DO NOT SINCE WE DO NOT HAVE FLAT TOP ROCKERS???

02-14-2007	#1
WB9MCW Join Date: Dec 2003 Location: McHenry, Il. Posts: 6,584	NO ZINK IN THE MOBILE 1 OIL ANYMORE DAW THIS ON THE NET SERV AND THOUGHT IT WOULD MAKE AN INTERESTING THREAD FOR COMMENTS HERE---WHAT DO YOU THINK/KNOW ABT THIS ISSUE??? Has Anyone read up on the effects that the removal of Zinc Phosphate from oil is having on engines. We had a speaker at my local corvette club (Corvette Club of Delaware Valley) meeting speaking about this. Evidently the federal government has mandated the zinc removal and it is causing engine problems. This particular gentleman was running diesel truck oil in his cars in 2006 because it still had it but is being removed per mandate in 2007. He is now running Comp Cam break-in additive (has Zinc)in his oil. He has older Corvettes and various other cars (Ferrari's, etc.) so Synthetic oil is not involved. Is anyone familiar with this and what about synthetic (Mobil 1)?? This is from memory so it is a bit vague. A year or so ago there was a thread here that discussed this topic related specifically to Mobil 1's New 'Advanced' formula (zinc eliminated). The discussion at that time indicated that some people (as I recall Hib offered some insight at the time) were using Mobil 1 motorcycle specification oil which was supposed to retain the zinc at that time. Also it was mentioned that Mobil 1, 15-50 weight oil retained the zinc phosphate additive . I use Mobil 1 combined 15-50 with 10-30 weight which seems to help with start up chain rattle and purchased a large quantity of the "old" formula 15-50 to benefit from the zinc content. (Mixed weight oil is a personal decision, not OEM supported and subject to debate among members of this list. This is not a recommendation). There was good information in that thread and you may benefit from an archive search or recollections from some that have a better memory. John R Sullivan '91 Polo Saddle #283 Original owner. My understanding from this discussion is zinc is no longer in the Motorcycle oil and we all should be looking for a suitable replacement. I will check out the archive. I must have missed that thread I found this information - I think it was also mentioned in a relatively recent issue of either Vette or Corvette fever. It seems to talk mostly about older flat-tappet engines. "...reduce the amount of ZDDP (zinc dialkyl dithiophosphate) in street-legal, gasoline-engine motor oils. After all, they weren't needed with modern roller lifters and overhead-cam followers. The reduction first started in the mid-'80s, and it has been a gradual process, but the latest API SM and GF-4 specs have reduced ZDDP content to such an extent that the new oils may not provide adequate protection for older, flat-tappet-equipped vehicles running nonstock, performance cams and valvetrains. http://www.hotrod.com/techarticles/e...ech/index.html SO DOES IT MEAN WE DO NOT HAVE TO WORRY ABT THIS ISSUE IN THE LT-5??? OR DO WE??? MY GUESS IS WE DO NOT SINCE WE DO NOT HAVE FLAT TOP ROCKERS???