I do believe that the later PCV valve set up from the TR4A would be an
improvement for an earlier car, if originality is not required. It would be
more environment friendly.
I would add that synthetic oils are a not an option for the TR engine unless
the engine is newly reconditioned with tighter tolerances than original.
This subject has done the rounds before so I will not dwell on the subject,
suffice to say TR engines were designed for single weight oil in the 1940s.
20/50 multigrade is really too modern for them but perfectly adequet.
Regards
Adrian
TR4A CT64306 O
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