Motor Oil and Vintage Motorcycles - Info Series booklet

Since opening Franz and Grubb Engine in 2011, I have had a LOT of conversations about motor oil. I wrote this booklet to address a few things:

Why I have only sold Brad Penn and PennGrade1 oils in my shop, and some common things about oil that come up often. I hope you find it to be useful.

This comprehensive 32-page guide covers what you need to know about motor oil and its application in vintage motorcycles. Written by  Dan at Franz and Grubb Engine, this booklet is an essential resource for vintage motorcycle enthusiasts and owners.

Download the Complete Oil Guide (PDF)