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fordor41 · 05-14-2020, 10:58 PM

I agree with dmsfrr, I use zinc in my Y-block with 10-30. I figure that it is cheap insurance. $15 every 3000 miles is not going to break me! I add it with every oil change.
I also used zinc in my '81 SBF 302 with Mobil 1 Synthetic 10-30. added the zinc every filter change(3K mi) , changed oil every year and we drove the car, as I remember about
7-8K miles a year.

05-14-2020, 10:58 PM	#11
fordor41 Senior Member Join Date: Oct 2011 Location: elmira,ny Posts: 1,517	Re: oil with out zink I agree with dmsfrr, I use zinc in my Y-block with 10-30. I figure that it is cheap insurance. $15 every 3000 miles is not going to break me! I add it with every oil change. I also used zinc in my '81 SBF 302 with Mobil 1 Synthetic 10-30. added the zinc every filter change(3K mi) , changed oil every year and we drove the car, as I remember about 7-8K miles a year.