Classic/Antique Car Repair: DELO OIL IN CHEVROLET 409, chevy motors, texaco oil

Question
I was advi=sed to use delo (deisel oil) in my 1962 chev 409> Do you think this wil do damage to the engine due to the additves and weight factors////


Thank you

Tony

What oil do you use in your antique cars engines? Currently using Penz 10-30

Answer
Tony
HI;   well I was sitting here with my Dad who is 91 yrs. of age.  he was a engineer all his life. and he said he had heard of a few people doing that back in the old days, but they would mix the oil some way,  he said he would be against it, well as in my own opinion I have had a lot of Big Block chevy motors, 396,409,389, 427, 454,and all I used in all of them was a good  brand of oil-most all good brand names are good. and I would add a can of S.T.P. at every oil and filter change.   .or Texaco oil is a good oil 10-40    or a straight 30 or even a straight 40 wght. oil. I remember my 1969  396. I put a new pump in and I used a H.D. oil pump spring, well I used a 30 wgt.Texaco H.D. oil   and a can of s.t.p. and I would have super oil p.s.i. 60 to 80 p.s.i.with no leaks.