the API tests and certification (if you want to know more, consider referring to their ASTM documentation) are getting stricter and stricter NOT ONLY on environmental/fuel economy concerns.

and even on fuel economy, do you think an engine having high friction (lack of lubrication as per your concern) can still achieve that very purpose?

also, additives are RESTRICTED even further mainly due to environmental concerns, do you think you can simply add additives and get certified? (that's why things like amsoil signature series for extreme/extended OCI, or racing oils like 300v will NEVER get certified ever - too much additives)

and you said it yourself ma, viscosity doesn't determine an engine's protection ma, why not use lighter so the engine can perform better
ps: amsoil ss pdf i linked is mmg same brand/same model with different viscosities for your comparison
feel free to dig up motul's 300v also.

and of course, there's also my UOA lab report which i am linking again:
https://forum.lowyat.net/index.php?showtopi...post&p=69700867

not the most impressive of wear report, however i've been ascertain by many people including the folks at BSL that the wear is normal for early engine stages (leftovers from running in and what not)

bro nicotine isn't wrong, that's the reading on our car's meter.

the thing is, that temperature reading is placed so close on the engine hood where it's very easy for engine temperature to affect it's readings.

the service manual CLEARLY specified AMBIENT temperature.
and according to google/websites like this:
https://timetric.com/index/temperature-kual...ort-wmkk-metar/

it's NEVER going to be at 40c as you're pointing out.

=edit=
is that from proton or mitsubishi?
i only glanced through our proton manual so i guess i missed it

This post has been edited by Quazacolt: Aug 13 2014, 01:27 PM

zoom in the picture sikit, it's exactly the same picture and quote i have linked earlier

i dont think our weather gone above 40°c

The highest temperature was recorded at Chuping, Perlis on 9 April 1998 at 40.1 °C (104.2 °F). The lowest temperature was recorded at Cameron Highlands on 1 February 1978 at 7.8 °C (46.0 °F). The highest rainfall recorded in a day was 608 mm (23.9 in) in Kota Bharu, Kelantan on 6 January 1967.
Geography of Malaysia - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Geography_of_Malaysia

Okok i phailed geo lol. Next oci i use xw30. Ampun tuankuuu

This post has been edited by nicotine: Aug 13 2014, 01:41 PM

Cilako u got me there. I diam diam go main at corner liou hahaaa
Was thinkin to edit liou mana tau dah kena qoute lol.

This post has been edited by nicotine: Aug 13 2014, 01:43 PM

no la it's your choice la, if you're comfortable for xw40, by all means go ahead la.
cheaper also.

in fact, i know i wasted on additives (lol that note on the manual really hits home) , and wasted on good EO like amsoil signature series because proton OCI too short lol.

the calcium (detergent/dispersant) and TBN is even higher than brand new/fresh engine oil after 8500km of hard usage and even comparable to brand new HDEO/Diesel engine oils

internet will never forget geh

like gear ratio master cavino ?

I didnt say about using xw20 for Inspira....Honda is a much bigger global company and they can afford to r&d newer engine oil to test with their cars....
Meanwhule, proton needs to borrow money from gov to develop new car...they aint gonna be wasting money to test new oils on existing cars, or even new cars....whatever previously work for their engines, just keep it status quo. Furthermore, Campro also ancient Engine....Lala lagi no fcuk since it will EOL soon.

It's from Potong wan.

hailat then i also wrong saying potong recommends xw40

Because Fake Lancer got CampurMIVEC. Fake Inspira only got MIVEC.

CampurMIVEC > MIVEC!!!

This post has been edited by Matrix: Aug 13 2014, 02:30 PM

XW40 cheaper than XW30?? Sure boh??

they don't need so much additives such as VI to maintain oil viscosity stability wut.

you go supermarket like tesco, those full synthetic cheap oil on promotion, tell me what is their viscosity.
you'll find a common pattern of almost everything being xw40

shell also don't have other viscosity for their pureplus in Malaysia, ONLY xw40.
AFAIK USDM/euro shell got xw30 though

Hmm...i haven't noticed this, i guess you are right...didn't see any xw30 at TESCO if i remember correctly.

Where did you buy your AMSOIL?? xw30? How much ar?

This post has been edited by Matrix: Aug 13 2014, 02:36 PM

Lala temp sensor abit inaccurate and tend to be on the higher side compared to other cars.

Trust me, if it really hits >40c air temp, you'll be seeing a whole bunch of other issues, for eg. Tire air deflation...

aduh you mmg tau i advocate of light viscosity still ask if it's xw30 meh? go look at my UOA lab report again

i bought it for rm45/946ml from zhapalang; boss said was on promotion/clear stock woh, so dunno will remain same price mou

UOA report got mentioned?? Too many words..lol.

Inspira needs 5L rite...so needs 6 bottles...Rm270 at your price.

RM45 consider ok in Malaysia, no many people will buy xw20.
If selling Pennzoil 10w-30 UP 5 quart @ RM150 don't know anyone will buy