Back in the 60's I chose my oils by the results of the noise level test at different temps.
There was a difference and when the noise level was high it meant the cousion between parts was not so good.
I took Duke's advice and will use the API ratings he says work the best in the older engines, but have not heard any thing about noise levels.
Back in the 60's when I had the heads off cars a old timer would come to my stall and feel the ridge in the cylinders, ask what the milage was, then tell me if the owner was using 10W/30 which (at the time) had higher noise level tests, or a straight weight oil.
He would then open the door and prove it by reading the oil sticker which was usually put on the drivers side door jam.
He was right on all the time so I never used 10W/30W or a multigrade till the racing oils came out, then I used 20W/ 50W.
I used Valvoline Racing and Penzoil racing 0il for years and now only find Valvoline Racing oil which is a ashless disbursent oil.
Aircraft oil is also ashless disbursent (if I am spelling it right) and only a few auto oils are ashless disbursent.
OK Duke lets hear what you have to say, you might have been there when 10W/30W first came out and read noise level tests also.
I use valvoline racing and am going to try the C oils but all the years of sucess with them is something that I will not have time in life to get personal test results on the C oils.
DOM
There was a difference and when the noise level was high it meant the cousion between parts was not so good.
I took Duke's advice and will use the API ratings he says work the best in the older engines, but have not heard any thing about noise levels.
Back in the 60's when I had the heads off cars a old timer would come to my stall and feel the ridge in the cylinders, ask what the milage was, then tell me if the owner was using 10W/30 which (at the time) had higher noise level tests, or a straight weight oil.
He would then open the door and prove it by reading the oil sticker which was usually put on the drivers side door jam.
He was right on all the time so I never used 10W/30W or a multigrade till the racing oils came out, then I used 20W/ 50W.
I used Valvoline Racing and Penzoil racing 0il for years and now only find Valvoline Racing oil which is a ashless disbursent oil.
Aircraft oil is also ashless disbursent (if I am spelling it right) and only a few auto oils are ashless disbursent.
OK Duke lets hear what you have to say, you might have been there when 10W/30W first came out and read noise level tests also.
I use valvoline racing and am going to try the C oils but all the years of sucess with them is something that I will not have time in life to get personal test results on the C oils.
DOM
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