maztang (ryan)
+1y
ok, this is what i have learned through my dad and aviation schooling about oils. you really only want to use the seafoam if you want to clean the engine out. i would suggest using half the can right before you change the oil and drive it about 15 miles then change the oil. you can also use tranny fluid to clean the engine out. i personally wouldn't use more than 1qt. run the tranny fluid in the engine for about 500 miles and change it out with 3 qts oil and 1 qt lucas. i have learned that lucas is an awesome additive. i think everyone i know that races, rather it be a sprint car, drag car, or on the street uses lucas. i use it every oil change and i love it. it keeps the bearings oiled up real nice. from what i have learned in aviation schooling is that if your vehicle has been running on mineral oil for over 40 or 50 thousand miles you do not want to switch to fully synthetics. for the sole reason that it will wear you seals faster than just sticking with the mineral oil. i would suggest that if you just rebuilt the engine, break it in with straight 30 weight and then regular 10w30 for about 12000 miles then switch to fully synthetic with lucas stabilizor.
this is just my .02