Been using the VR1 in my 56-57 t-birds facing that flat tapped design…no cats back then and Rotella 15W-40. I also have these 4 oz bottles of ZDDP additive I have yet to use
Also: if you have the intestinal fortitude to sit and read….this is loaded with oil data. It can be long and boring but after the first 15 paragraphs or so, there is some very good test results posted.
EDIT: it’s been a few years and the first several pages have accumulated loads of testimonials and letters of gratitude to the writer..so, scroll down to some tests and recommendations….i think you’ll like it
Scroll down u til you see this…that’s where the good stuff starts
….On smart phones, “Q&A” CAN NOW BE ACCESSED BY CLICKING ON THE 3 HORIZONTAL BARS IN THE UPPER LEFT HAND CORNER…..******..With so many different Blog readers coming here…
540ratblog.wordpress.com
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