Guys, First, Merry Christmas!!!!
Second, From following the list and some reading it looks like deisel oil, such as shell rotella is a good choice for our Olds engines? I regularly drive my 72 98 (original 455), can I run 15W40 in it? I usually run 10W40 in the summer and 10W30 in the winter. Matt ----- Original Message ----- From: "Infinite Space Systems, Inc." <[EMAIL PROTECTED]> To: <oldsmobile@chebucto.ns.ca> Sent: Sunday, December 24, 2006 1:27 PM Subject: Re: Zinc levels in oil > Marty, > > Outside of what Mark said, there basically isn't. The article that raised > the warning in Hot Rod Magazine is the best source, but it only covers > Quaker State synthetic racing oil, Pennzoil Racing Oil, and Shell Rotella. > You can go to the individual oil company website and look up the oil and > read the spec sheet, but sometimes the zinc and phosphorous content isn't > listed. For Kendall oils, the zinc was listed. For Pennzoil Racing Oil, is > wasn't listed. You just have to search and read. > > Directly from the Hot Rod article, June 2006, When Good Cams Go Bad: > > SH API oil rating 1996 > zinc = 0.130%, 1130ppm (parts per million) > phosphorous = 0.120%, 1120ppm > > SJ API oil rating 2001 > SL API oil rating 2004 > zinc = 0.110%, 1100ppm > phosphorous = 0.100%, 1000ppm > > SM API oil rating 2005 > zinc = 0.087%, 870ppm > phosphorous = 0.080%, 800ppm > > Cosworth Racing Oil > zinc = 0.125%, 1250ppm > phosphorous = 0.115%, 1150ppm > > Shell Rotella T > zinc = 0.140%, 1400ppm > phosphorous = 0.130%, 1300ppm > > Pennzoil 25W-50 Racing Oil > zinc = 0.196%, 1960ppm > phosphorous = 0.180%, 1800ppm > > Quaker State Q Racing Synthetic > zinc = 0.200%, 2000ppm > phosphorous = 0.180%, 1800ppm > > Obviously, the 4 oils above do not have an API rating for newer engines. > Their rating would be SH or SG. Pennzoil Racing is SG. Rotella is SH/SJ. > > From the Kendall website for GT-1, which I've used since 1964 and now can no > longer use for fear of cam and lifter damage: > > Kendall GT-1 amber 40W. Older green GT-1 was used in Thunder and still have > 5 quarts of the green oil left. New GT-1 color is amber. Green GT-1 has high > zinc and phosphorous content. Amber GT-1 has low content. > zinc = 0.104%, 1040ppm > > Kendal GT-1 amber 30W. Older green GT-1 was used in the other Olds engines. > zinc = 0.104%, 1040ppm > > Kendal GT-1 amber 20W-50 > zinc = 0.113%, 1130ppm > > Kendal GT-1 amber 10W-40 > zinc = 0.086%, 860ppm > > Marty, that's where our engine oil for our older engines has gone, > to-Hell-in-a-handbasket. You'll have to search out the rest of the info for > other brands on your own. > > Milton Schick > 1964 442 Cutlass > [EMAIL PROTECTED] > > > > ----- Original Message ----- > From: "Marty McLeod" <[EMAIL PROTECTED]> > To: <oldsmobile@chebucto.ns.ca> > Sent: Sunday, December 24, 2006 5:58 AM > Subject: Re: Zinc levels in oil > > > > Milton > > > > Is there a web page or somewhere on the web that I can go to find out a > > breakdown of all the oil manufacturers and how much zinc each has in there > > oil. Also, what is the minimum amount required to run in our older > > engines. > > I want to look in to all before making a decision on what to run. Thanks > > and I want to wish a Merry Christmas to all. > > > > Marty McLeod > > >
