[TR] Article about new oil formulations

[John Cohen]

How about a partial synthetic like Brad Penn Grade 1 20w-50.  It has high
zinc content, and it supposedly provides outstanding protection for flat
tappet cams.  It is the same refinery as the old Kendall GTX green oil.  At
about $4.50 per quart it is about the same price as most full synthetics.  I
have used it now for about 6 months with no increased leakage. 

 

www.bradpennracing.com

 

John Cohen

76 TR6

http://www.triumphowners.com/701

 

 

 

I called the Castrol tech line and inquired about having a flat tappet cam
and what oil would they recommend.  The answer was to use Syntec 20W-50 only
due to the zinc content of 1200 ppm (0.12%).  I asked about the Castrol GTX
20W-50 that I have used for years.  The reply was that the new API spects
have significantly reduced zinc content and that the GTX was not recommended
for flat tappet engines.  I believe that the Syntec 20W-50 is a full
synthetic oil.  Leading to the question of switching to full synthetic oil
in the following e-mail.