Re: Oil change

Posted by Retired  On 2023/10/23 17:13:16

Thanks for all the advice.
I acquired the business coup back in the spring and l want to change the oil before winter storage.
We live up north. Not sure what kind of oil is currently in it but I prefer to stick with a conventional 30 weight detergent oil with zinc. The engine runs well, once warmed up, but like any engine from that era it huffs a bit of oil. I’m fortunate to be able to run a non ethanol high octane fuel in it. Shell Rotella seems to fit the bill but I’m not sure about the zinc or detergent aspect. Any thoughts?