winter oil
FTE Chapter Leader
Joined: May 2009
Posts: 8,843
Likes: 27
From: Eastern Ky
Nothin wrong with Castrol, my engine is getting near 200k...(179k as is)...
and I figure it needs more love...
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From: Spokane, WA
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Fleet Mechanic
Joined: Feb 2007
Posts: 1,326
Likes: 48
From: Middle TN
Flat tappet lifters (which our engines have) can have loads up to 40,000psi when revving. Zinc prevents this extreme load from being metal to metal and causing excessive cam wear.
Zinc was taken out of automotive motor oil because it was found to damage catalytic converters over long periods of time.
Diesel, racing, and most high end synthetics provide protection for flat tappet engines.
Zinc was taken out of automotive motor oil because it was found to damage catalytic converters over long periods of time.
Diesel, racing, and most high end synthetics provide protection for flat tappet engines.
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Joined: Nov 2007
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From: Denver Metro Area, CO
The following Mobil Oil page has a link to an Excel spreadsheet that may be worth taking a look at....
Has Zinc Been Removed from Motor Oils?
Has Zinc Been Removed from Motor Oils?
Fleet Mechanic
Joined: Jun 2010
Posts: 1,251
Likes: 8
From: North Carolina
The following Mobil Oil page has a link to an Excel spreadsheet that may be worth taking a look at....
Has Zinc Been Removed from Motor Oils?
Has Zinc Been Removed from Motor Oils?
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