hi sifu2 otai2 sekalian,

for a new Lagenda 115z first service, what would be the ideal engine oil to choose, if wan to sayang engine in the long run?
can i use the silver bottle for 1st service and change to semi/fully on 2nd service? or it will be better off to straight use fully after 1st service?

planned service internal:
1st service: after 500km
2nd service: after 1500km
3rd service and ongoing: every 2000km

semi, fully or silver bottle as per photo below?



This post has been edited by guailow83: Dec 22 2021, 11:04 AM

Janji EO ori... jgn recycle punye...

servis dkt yamaha authorized center due to warranty mau kasi chop buku warranty

so EO confirmed ori..

i would just go for fully synth but since your service interval is not that far semi pun ok. whatever tickles your wallet since kapcai service is not that expensive. just that after your warranty dah habis never tuang JTX eo in your engine or else there's people out there will pm you if want to tukar engine bearing can pm them.

SEMI SYNTHETIC IS OKAY ADY

tenkiu bossku

Something to ponder on:

1) FULLY SYNTHETIC by definition is 100% synthetic base. This we know cock sure edy.

2) MINERAL by definition is 100% mineral base. This too we know cock sure edy and they're cheap.

3) SEMI SYNTHETIC is what exactly?

10% mineral base + 90% synthetic base = semi synthetic
90% mineral base + 10% synthetic base = also semi synthetic

For all the variations in price for the different semi synthetic offerings, it would be simpler to just buy the cheapest fully synthetic oil you can find coz at least you know cock sure you're getting 100% synthetic oil.

agree. will go for fully since fully syn not too pricy compared to semi also

tenkiu for ur inputs. appreciate it =)

Personally every oil feels different. New oil makes it feels fresh. As it age's it makes the engine a bit sluggish. Mineral ages more quickly than synthetics. Even between different brands each engine oil makes the engine slightly behave differently. Some brands feels thinner thus making the engine more rev happy some feels a bit thicker so a bit sluggish.

Key is to experiment. Stick with the factory spec then upgrade the oil quality as needed to suit your service interval. My scooter uses mineral Yamaha lube @2k interval. I didn't feel any drop in power compared to when I used fully or semi at the same interval. My Y15 I use semi because despite the factory recommends 3k for semi and 5k for fully. I found that I feel the motor become sluggish at 2k for semi and 3k++ for fully. So I choose the cheaper oil and service sooner. I will splurge for fully if I plan for a long ride with my friends.

This is all based on my butt Dyno. So take it with a grain of salt. At the end of the day its your wallet and your time to service your bike. Do what suits you just make sure don't skip any of the service interval or skimp on changing the oil filter

Any recommendation for the cheapest fully synth? shell ultron?
I dont trust shoppee eo.

my opinion bike baru, go 1st and 2nd semi, lepas fully run in, than fully syn all the way.

You can try Bold Engine Oil, Shopee ada, Rm15 only. You can change as frequent as you like.

Soli to necro. Just want to ask what is the recommended change interval for 4T mineral and fully syn? Is it 1k and 5k?

no experience with mineral. I'm using fully

when servicing your bike, try peep the colour of oil

initially I tried change at 3k. but the colour I noticed quite dark

and now my usual interval is 2.5k and change oil filter every 2 times oil change

Your 2.5k is mineral or fully? Kapcai or super bike?

fully. kapcai

3 years ady time flies

What viscosity u use? Any brand recommendations?

i just stick with yamaha fully black 10W-40 (the one on post#1)

brands aside, i think changing periodically is more important

best is to follow the manual, also depends on your riding style

Manual states every 2k. Currently using mineral and change every 2k. Wondering if use fully can extend the interval or not, hmm.

perhaps you can try changing to fully and see if there is any difference in daily ride

if not much difference then probably can switch back to mineral?

but if really sayang engine pakai fully lor