I decided to go direct to the "horses mouth" about ZDDP, got this
answer from Red Line in less than 24 hours.
Thank you for contacting Red Line Oil, yes absolutely we have good
levels of ZDDP in our oils, the Motor oils including the 20W50
contain 1330 ppm zinc and more importantly for anti-wear protection
1200 ppm phosphorus. In your Triumphs I would recommend and prefer
the 10W40 a better all around viscosity for those engines, unless you
need the higher viscosity 20W50.
Regards, Dave
Red Line Oil
--
"Thinking is the hardest work there is. That's why so few people
undertake it." - Henry Ford
Bill Pugh
1957 TR3
"Casper"
TS16765L
Wallace, CA
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