because generally mineral oil is unable to keep up the viscosity index requirement on modern day engines.

what's viscosity index? its a number given to how much variance between the oil that's thin/thick on cold temp, and how thin/thick during hot temp.
the higher the number, the lesser variance it is.

the layman and requirement is, oil should be as thin as possible during the coldest freezing temperatures, while as thick as possible during extreme >150c oil temps.
almost an impossible ask, but modern science is making it very possible, hence fully synthetic.

Toyota Gazoo racing is aiming and wanting that in their vehicles:
https://toyotagazooracing.com/jp/gr/grparts/oil/

= High viscosity index achieved through the latest polymer technology

random BITOG:
https://bobistheoilguy.com/forums/threads/w...tor-oil.334976/
GR Supra is also specced to use 0w20

Sorry different topic. What's ur view on 0w16 fully synthetic, in the US more and more cars putting that as recommendations

My opinion. 2 opposing targets.

For sake of fuel consumption, use lower viscosity.

For sake of engine protection, may be not.

For the majority of layman, no issue, can use.

But I would like to think if Honda is going to use for its direct injection engine (particularly down sized turbo direct injection like CRV 1.5 turbo), then the oil life monitoring would need to be more stringent and most likely lower intervals to deal with fuel diluting

Thinner 0w16 would also be more expensive

Just this 2 items would irritate and anger majority of customers I'm sure.

True in the dilution but luckily our weather is hot n better petrol vs frm US ,where the accord/civic 1.5t owners faces massive head gasket leaks
So my case I use 0-20 with up to 6k km intervals n 0/5-30 after 100k km mileage

I read about fuel dilution problem for the American market. So when I got mine, I check my fuel dip level very carefully and it doesn't rise at all. So my conclusion is, there is unlikely to be fuel dilution issue in our hot climate. Now I just don't bother and just enjoy the drive.

Sure will hv dilution or increase volume when run short trips most of the time, my FC had this but ofcourse our car run hot weather will burnt off faster n I see tht sometimes techs add more Eo,so when I do out side service always measure enuff volumes n not 4lits all the way poured in

Actually, is the other way around, as the fuel thin out oil and it's easier for oil to get evaporation if when it finally reaches hot temps

And the thing with fuel is that it permanently (but of course, very slowly) degrades viscosity index

Meaning, it becomes the opposite that oil is thicker on cold, thinner on hot.

Generally, a bit more (and obviously not too much definitely not entire 4 liters. D) is better when combating fuel dilution

Issue is when centers pump from drum or follow by the book, the oil level will only be around middle

So generally manual requires around 3-3.2 liters
You could top up additional 200-400ML to get full marks (lol) on dipstick

-
By now most people would realise, this is really enthusiasts level and splitting hairs.
Few hundred ml for 2 oil changes within a year wouldn't make much difference. And most certainly not within the 5 years warranty manufacturer covers.

What it definitely would help is better engine health over much longer duration (so this is the risk of used cars, lol)
And how much this alleviate against owner application and usage (hard driving, cold start straight whack, modifications, ECU remap, missed oil change intervals etc) and, manufacturers "planned obsolescence"

After sometime after service,the level usually past Max level.thts the worrying part

I often remind the service center to NEVER overfill my engine. If they do, more work for them to take it out.

I hardly notice any increase or decrease on mine. So I no longer bother to check nowadays.

Finally first round trip between Melaka and KL, and some running around KL city area, Kepong etc

The new Honda CRV with Honda sensing L2 autonomous driving + ACC (adaptive cruise control) is really nice.
60-70% of all the highway driving was done by the car, and obviously me to be on standby, and also acknowledging the "steering required" warnings/naggings

The majority of the driving is done by the car automatically.

FC from 7.7 KM/L become 10.2-10.4 KM/L on average (B was reset since first inspection)
No oil change on both engine and transmission.

Refueled on Seremban highway on the way back to Melaka from KL, so my A trip was reset, and that FC is showing 13.7 KM/L
Smooth traffic, average between 110-130Km/H, sometimes even hitting 150

for a 1.6 tons car that haven't even gone through its run in period and still running on oils full of metal debris that's just crazy good!

I've praised a TON on the CVT experience with the Civic FE since 2022 until 2023 ownership, and the CRV doesn't disappoint.

Bolded really sums it up on both my Civic FE and CRV (model code RS, not the trim hahaha) Gen 6 experience

If you ever have time, suggest hitting the EKVE new highway. It's kind of a resemblance to the Karak highway, but with a more straight line, and best of all, it has less traffic. The downhill stretch kinda the longest

today finally tried sport mode. damn fun to drive and the car feels lighter. But the fake exhaust sound is a let down. Too fake! lol

Haha they borrow Civic Type R sound to pump in ma... it's all good fun if you know it's fake and accept that it's like a video game feature lol

Honda's steering wheel is not good enough . my palm feels soar if been holding it too long . it doesn't has the cushion that most conti cars have.

Lol,y u need prrss6so hardleh,all Okla so far more me,jus lightly grip it

lol...in sports mode you need to grip tight. The torque is quite impressive.

Bro,u gt sensitive skin is it?lol