It is discontinued,  the new product code is AZO,  new signature series line.

Can consider visiting Zhapalang at Kepong to purchase. zendengoh

oh my bad just remembered.

i've test driven a scooby lineartronic (legacy 2.5 turbo)
really really fun stuff, takes all the boring away from a D segment car.

no surprise really, the WORLD is moving towards lower viscosity, by hook or by crook.
read up the evo x manual, they recommend xw30 too

while the non turbos are in the xw20 already.

myvi owner manual recommends xw20 too btw, while proton campros on xw30.
so ultimately, it is just people's mentality here imho.

nope, only waste more money on fuel.

just look up my fuelly/youtube.

was about to say!

theCrab

if you don't want to spend so much, can  try amsoil XL as well, which allows ~10k miles (or 16k km) or 6 months whichever first.
example: https://www.amsoil.com/shop/by-product/moto...ront%2Fxlm.aspx
and that is API SN certified:
https://engineoil.api.org/Directory/EolcsRe...nyName%3Damsoil

signature series is too heavily loaded on additives/detergent hence it can't pass API certification, however that's why they can boast 25k miles oil change interval (OCI) or 1 year whichever first.
considering you're clocking mileage much faster than regular motorists, signature series is still a very good choice despite being more expensive than XL as you'll probably be changing oil every 8 months? (assuming 5k km/month, 25000 miles = 40k km)
that would still beat XL or almost every other oils on the market.

if you want to be even safer, consider changing your oil filter every 10, or 20k km (2 or 4 filters basically up till the 40k km for a full drain/oil replacement) and top up any loss oil through engine combustion/oil filter replacement.

Your information likely to be wrong because a 5W40 made from Group IV can no way be called "premium". Group IV is lousy base oil so the 5W40 must also be lousy. It's so bad that I am pretty sure your car manufacturers will void your warranty if you use them.

That's assuming you are right about it using Group IV base oil

I reckon they are OK if you are using that for making 15W40 oil but not if it's a 5W40. The range is too wide.