Some time ago, I became aware that the lack of ZDDP in contemporary oils
could be a problem for older engines like those in Tigers. In doing
some investigating and, in particular, talking to the folks who make Red
Line Synthetic Oil, it seems that the problem occurs at the beginning of
break-in. According to Red Line, you should use an oil with the usual
amount of ZDDP from back in the day when breaking in the engine or use
an additive as has been mentioned. After 3000 miles (i.e. when the
rings, cam and tappets are sufficiently broken in), it is my
understanding that it is OK to use a contemporary synthetic oil or
whatever. I just took a look at one of the bottles of Redline 10W-30 I
have been using since my engine was broken in and there is a statement
to that effect on the container. However, there seems to be some
disagreement on whether it is necessary to continue to use oil with high
ZDDP content after break-in, so I'd like to hear from anybody who has
investigated.
Cheers,
Tod
B382002384LRXFE
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