oil filter?

[bludclot]

i wonder how many different oils there are - really. i bet that there's many more different oil containers than factory end products - so i'm guessing that some of us are paying for our favourite brand name on the tub and the same oil inside as the next tub on the shelf that's 'less' branded.

experience tells me that some engines discolour their oils and some don't. when i've bought well - an obviously looked after and cared for low mileage vehicle - the oil tends to stay clean.....

as for (theoretical) weeekly oil changes i'm not convinced. for every up there's a down - once new oil is in after a drain and the engine started there's always that first second or two where's there's insufficient oil to keep everything quiet before the pump re-fills and sufficient pressure returns to fire oil up into the top of the engine again. this can't be good.

i use rock oil guardian for my bikes, i like it. but it's only really important to me at change time, the rest of the year while starting and using the bike i don't give the engine oil a second thought!