[M2M]

Originally Posted by GerryAllen

When I bought my car the seller was using Chevron, Dello 15 - 40 and suggested I continue on using it. I spoke with a chap the other day and mentioned I was about to change my oil and was using Dello 15 -40.
He seemed to be a bit negative about using it as he said it was detergent free. Is this the case, I would appreciate the "seasoned and not so seasoned" Model A types opinions.
Gerry Allen Birch Bay WA

He is wrong. See:

https://www.chevronlubricants.com/en...le-15w-40.html

Nothing wrong with that oil but if you believe high levels of ZDDP help prevent metal on metal wear then I suggest "Mobil-1 15w-50" or "Mobil-1 20w-50 V-Twin" which have very high levels of ZDDP. See:

https://www.walmart.com/ip/Mobil-1-1...5-qts/20713647

https://www.walmart.com/ip/Mobil-1-2...1-qt/16767830?

https://mobiloil.com/~/media/amer/us...pecs-guide.pdf

Or you can just add this to "normal" cheap oil:

https://rislone.com/product/3x-conce...inc-treatment/