[M Fifty]

Separately, noting the number of threads highlighting the quality or lack thereof of US pump gas (sulphur content, AKI rating), is this fixation with engine oil turning to wax and/or paraffin in a matter of days followed by the cam lobes/followers melting indicative of the 'oil' that used to be available in the US? The climate variations across a continent will mean the one size does not fit all, but still...