Ron, I use GOOD 20W-50 IN MY 1929 14l and also in my 31 22A. There is a version with the proper additives and Zinc Called Castrol GTX Classic 20-50 engine oil. You can get either the 5 quart jug or six quart bottles.

Link below is to their webpage

https://www.castrol.com/en_us/united-states/home/products/our-brands/automotive/castrol-gtx-oils/gtx-classic.html


Rick

Where Are You From? Fremont, California

Do You own a car built by Durant? 3 of them

Merci pour vos reposes
Je ne trouve rien comme filtre de remplacement, avez-vous des références a me proposer ?

Where Are You From? france

Do You own a car built by Durant? oui

quel filtre de remplacement recherchez-vous, filtre à huile ?

Where Are You From? Fremont, CA

Do You own a car built by Durant? 1929 Durant Roadster & two 1931 Durant Model 619 Sedans