Researching synthetic oils and see a descrepency  By  Deleted (Read 4,304 times)

most of the oil changes on these scooters are done because of impurities, not because the oil is worn. In many cases you could run 5k miles on a scoot with the oil before it would be somewhat worn, but the oil would have so much impurities in it, that wear your engine, that it doesn't make sense to change it when the oil is no longer functioning.
A friend of mine bought a Honda Camino scooter, used it for almost 10 years, without ever doing an oil change, before it started to give in. The oil was almost like mud due to the impurities.

especially during the break in, metal flakes are the main ingredient of the impurities. After that, blowback exhaust gasses, that enter the crankcase between the piston rings and the cylinder walls
And last, corrosion, acids due to water, and other kind of chemical wear.

In modern day cars, where engine tolerances are a fraction of these chinese scoot engines, there's a lot less of these impurities in the engine block per gallon of oil, and that means that in those engines oil needs to be changed when it's worn. even then, most engine oil in car engines still has at least 50% of life left.

Synthetic blend oil is priced the same price as dino oil (like perhaps upto ~$5 difference per gallon). Full synthetic is as you say, significantly more expensive.

First impression...Revs faster! Havent speed tested with GPS yet to see if it helps top end because im not rev limited.

Used Mobile one 10w40 , 4 cycle full synthetic.

howdy, well, i guess i'll stick my tongue in the light socket again---valvoline has not come out that well in tests against mobile 1 which is what i use. part of the reason for that MAY be the fact that none of the valvoline products are FULL synthetic?

i also agree basically with those that point out that a scoot with a changeable oil filter will gain the most good from extended life as one of the benefits of synthetics is their ability to carry impurities in suspension to the filter where it can be removed.

the other benefit seems to be reduced friction , part of which will result in reduced metal particles in the oil to start with. the reduced friction also results in less heat which i would think a good thing for any engine.

anyway, congrat's to the original poster who, in my opinion made a good choice and i hope that proves to be the case for

lotsa miles and smiles to ya
ken

Right and they pump it all out if the ground whether its Penzoil Valvoline or Mobil 1. I use regular Castrol valvoline was only uses because it was an easy reference

Yep you will have wear from the suspended crud which won't get filtered out in a GY6. That is why non-detergent oil is usually specified for engines lacking an oil filter which allows the impurities that develope to settle in the bottom of the oil pan near the drain instead of being suspendend in the detergent oil so they can be picked up by the oil filter. Putting synthetic in a GY6 can actually lead to accelerated wear since the wear causing combustion byproducts and metal particles may be kept in suspension and pumped back through the oil pump and up into the head.

stuff like this is all you need for max protection tbh. it works great, is high value, and is.....OIL! imagine that? i swear by it, as do many others. some say its as good or better then anything. heck dudes they are 150cc / small cc engines, not jet burners. thats why i use heavy duty truck oil lol!

i use no synth, ever