I believe MMO is only tested to a 3,000 mile OCI - just curious if anyone has run a 10% to 20% ratio MMO to oil for a 4,000 to 5,000 mile / 4 month OCI ? Any potential issues ? Plan to use for a mild winter cleaning and easier start up with PYB - expect to dump it by April and switch over to QSUD , PP or M1 and extend the OCI.