Best High Zinc Oil

moper said
Roger,
There are two VR1s - VR1 with the highest zink is the "Not For Street Use" stuff. It comes in a six-pac case and Car Quest (Ted) can get it for you from their warehouse. If the stuff on the shelf at Auto Zone or Advanced has the SAE "sunburst" logo, of a rating of SM or newer (is there an SN yet?) then it's NOT what you need. The Not For Street Use stuff will damage catalytic convertors - which is why it's called that. It's not legal if you have cats but you're car it's fine. I have my customers with radical flat tappets them run that because it's easy to get without paying shipping. Last time I bought it I got it for $6/qt but that was a while ago. I paid $5.60/qt for Castrol yesterday so it's probably gone up since then.

hey Dave i read the "Not For Street Use" breaks down faster because it has no detergents which is fine for the race car becacuse i change it a lot and it only gets used 1/4 mile at at a time ,but the brand x car is also a flat tappet cam i usualy change it the end of march and run it to fall not even 3000 miles of use a season, do you think it would be a good idea to run it in there to, ive been running the castrol with lucas addative since break in with no problems so far. no cats on the car of course. maybe ill run the regular vr1 in it think the difference is it has detergents and less zinc but more zinc than the conventional oils.