My 1986 simplicitys have kohler magnum engines. Only st 30 works. Multi grade gives low oil pressure. I have had 5 of the kohler engines and they all give low oil pressure on 10 w 30 or similar.
Is straight 30 oil getting hard to find ? I have heard its not in great supply.
Is straight 30 oil getting hard to find ? I have heard its not in great supply.