This sounds like a dumb question,but what oil is the best to put in a "85 Honda 250 Four Trax engine? other words which brand should I use and what weight, plus should I use a four stroke oil or can I use something like Castrol or other brand? or does it need to be Honda Four stroke oil?
Your question is a valid one, not dumb, however there can be many dumb answers. A safe and very good oil to use is
Honda GN-4 10W-40. Remember to always change oil filter and use Honda OEM filter. Aftermarket filters have too many variations and sometimes cost the same.
Insist on OEM filter. Many automotive oil brands jumped on the bandwagon when more and more people became aware that an engine with shared oil for engine, clutch and tranny would perform better with an oil different from what a car engine would need. They now sell oil called ATV oil or similar, many times it is only an automotive oil in a different bottle. They are not up to the heat and discolor the engine inside, the oil thin out from the tranny, the top end wears faster and clutch performance suffer.
Stay away from all newer oil for automotive use that is energy conserving or with friction modifiers.
Another top oil to use is Golden Spectro 4 10W40. They also make a cheaper Spectro 4 10W40, however the Golden Spectro is far superior to most oils out there. With your '85 there is no need to go full synthetic.
Go the extra mile and get yourself the recommended oil. Buy extra and keep bottles at home. Ask dealer for discount as you buy from him instead from an automotive store.
