I remember that mixture .. that coal tar was nasty. To think it was put all over docks back in the day -- we had houses in Strathmere as kid moved to OC and LBI. The old timers did use new motor oil .. I guess we were purists with linseed oil/ turp and you could buy this powder to make it white. You would dip the shingles or brush it on if redoing I wonder if it was powdered leadAs far as the oil stain method, I will say I built over a 1000 custom sheds with rough sawn pine. The stain we made was 4.5 gal diesel , with anywhere from 1/2-1 cup of coal tar added, depending on what shade of brown you wanted. Easily applied with a pump sprayer.. An old time method that worked.
30 years later most still going strong....
New cedar sidewall shingles on this bldg were brushed with new 5W30 dino oil. I've seen no evidence of it running down onto the windows in the past 3 years![]()


