Originally Posted by Tango
8-71's are solid engines with a long life expectancy...but like anything else...only if they were properly maintained. Running an oil analysis should tell the tale on both the engine & tranny.
More great advice from Tango.
Also, find out what oil the current owner is running. The specific oil is important on these engines. Delo 100 30wt or equivalent, low Ash content.
No Rotella or Delo 400 or even Delo 100 10/40wt. All bad news for 2 stroke Detroit's.