Don,
Yes, sufficient ZDDP has been removed from most all modern oils to protect
the catalytic converters. I did some checking just last week as I was ready
to fire up my newly re-built motor and found that Valvoline VR-1 20w-50
Racing oil has the needed levels if you don't want to go the additive route.
The target concentration that you are looking for is 1200ppm.
Bill
Bill Beecher
'58 TR-3A TS/30766 L (On the road in 2009!)
'59 TR-3A TS/64974 LO (in buckets, for sale... anyone?)
"A Triumph is man's best friend, it always comes when it is called...of
course, some times it is difficult to make it go"
-----Original Message-----
From: triumphs-bounces@autox.team.net
[mailto:triumphs-bounces@autox.team.net] On Behalf Of don@napanet.net
Sent: Wednesday, May 06, 2009 12:34 PM
To: triumphs@autox.team.net
Subject: [TR] Regarding oil . . .
On the subject of oil, does anyone know anything about the removal of zinc
from modern motor oil? It's being done to protect catalytic converters.
There's an additive product that is supposed to compensate for this.
Supposedly, the zinc in the oil protects flat tappets (as old British cars
have). Or you can use a premium diesel grade motor oil which still has the
zinc in it.
http://www.zddplus.com/
Don Scott
1962 MGA
2001 Miata SE BRG
1962 TR4 (seeking)
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