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Concerns over the removal of ZDDP
for classic car enthusiasts
Posted: 4.3.10 |
John
Targett has mentioned a very topical subject in the US
concerning the removal of a motor oil additive, ZDDP,
which is causing an unexpected consequence for classic
car enthusiasts. The removal was intended to overcome
damage to the cats on modern cars and extend their life.
After over 70 years of trouble-free metal-metal engine
protection, the US environmental protection agency (EPA)
is forcing ZDDP from domestic motor oil. With engines
designed prior to the 1990s, your non-roller lifters require
ZDDP in your motor oil to avoid premature deterioration.
But what is the situation in the UK? Well Chris Hunt Cooke
spotted an article in a Federation of British Historic
Vehicle Clubs (FBHVC) newsletter published in 2008 which
provides some background from Castrol which may interest
V8 enthusiasts in the UK and elsewhere. The article is
reproduced in its entirety with the kind permission of
the FBHVC and Castrol.
See a copy of the Castrol article and a link to ZDDPlus,
a company supplying a ZDDP additive. More
Tony Lake comments "on ZDTP, it's best to check on
product data sheets, specification oils complying with
SAE, API or Military specs usually show key constituents
or test requirements that they meet. Popular oil brands
do publish their specs on the web. Castrol and Penrite
sites are quite revealing, no zinc in latest US produced
Castrol GTX but .08% in Penrite Classic and in UK produced
Castrol Classic XL 20/50. Worth reading the Penrite article
which traces both history and reasons for having/not having
ZDTP in the blend." More
& More |
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