In the years past it probably did not matter if a person swapped back and forth every oil change but todays formulations use additives synergisticaly and in an effort to get the most out of your oil I think it wise to find a brand you like and stick with it for a time .
For example some of these low cost dino's no use boron which in effect is a dispersant and cleaner and can offer additional wear protection . Used time after time it will be cleaning itself up yet if you were to switch and use an oil without it , next time you used the oil with boron it would possibly be spent early cleaning the other oil .
There is more to it to include the residual oil left over when changed and the particular calcium it used . May or may not be of the
overbased type which is a plus and generally costs no more than the oil right beside it without boron or overbased calcium in which also like boron can offer additional wear protection .
At least when you stick with an oil for two years your not mixing it with another and your getting the same type seal conditioning " yes, these dino's have seal conditioners in the group II types ".
Here at BITOG most strive for perfection in finding the best 3-4 dinos, synthetic blends and synthetics currently available . This site and it's members for the most part are a different bunch on the internet and often look past just the marketing hype and straight into the actual formulations to include the actual type basestocks used....quite a hobby we have
There is obviously more but I'll stop and let others chime in with their view points .
Oh yeah , we often disagree
[ April 23, 2004, 05:16 PM: Message edited by: Motorbike ]