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Old Dec 28th, 12, 1:52 PM
71350SS 71350SS is offline
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Angry Re: One Last ZDDP/Oil question!

Originally Posted by rocks66ss View Post
Like I said, I change my oil once in the spring and once in the fall and put about 1500 miles a year on my car. but lets say 700 miles to an oil change.

So if I can go 700 miles on an oil that is SM/SN rated off the shelf that has 800ppm Zn then I'm good to go.

So does any body really know the real reasons why you need oil with 1400+ppm Zn/Ph as opposed to oil with 800. Does 1400ppm really protect it better, or just longer.

I don't want to interrupt or change your post but just thought that this info might help you.I have 2 ElCamino's that need oil changes so doing this helped alot.I used to change my oil the same way or close to the way you do but it got to be too much.So since I put hardly any miles to none on them in the winter I decided to go to a once a year oil change.
I waited till late in the fall,then after the last time I used either one I changed the oil hot and put the car away.Come spring time I check the oil, start it up and take it for a good ride.Now its ready for a cruise if all the projects I have to do are done.
So basically I just stopped dumping the oil that just sat in the pan over the winter without hardly any miles on it.Ther only difference I have noticed was in my $ output.Obviously if you put a bunch of miles (say over 250 ) on during the winter then this post may not help much.
And rocky thanks again for the hip advise
71 El Camino SS
406 SBC M21 3.31 12 bolt
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Chevelle Tech > General Tech Area > Performance      Current Topic: One Last ZDDP/Oil question!
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