The odometer on my 1964 R27 shows about 8K miles. Haven't tried to start it. Any suggestions about how I can get an estimate of the mileage before I run it? Really the question is should I run it a while and do some evaluation on my own or send it off for an engine tear-down now to check the bearings, crank and slinger. It was last on the road in 1977. Is there a way to determine if the engine oil is detergent or non-detergent?