a couple yrs back and you were up to swap it out and said, "What kind of oil do you use?" I said CASTROL GTX 20-50... You quipped about how good my bottom end looked. Remember that conversation? I always thought people were crazy using 10-30 etc especially with high mileage on an older car..The thicker oil will help with tolerances and clearances that are just not as precise after 20 yrs and 100k mileage imo....Pretty funny this is coming to light now..I have always used 20-50....Glad you are doing well..I will call to catch up with you this week!! Nice mandrel tube bender also!! :)