You know and I know and I am sure Proton engineer also know that, don't you think? So no need to keep repeating it.

Since EVERYBODY know that we can ignore the 10W, then tell me, why does the CFE oil charts say 5W30 & 5W40 can only be used for Ambient Temperature BELOW 20C? Whereas 10w30 can be used up to 40C? Doesn't make any sense, right? In theory, BOTH 5W30 and 10W30 should BOTH be useable up to 40C. This is the mystery I want to solve.

My conclusion is, I don't know the answer and neither do anyone in this thread. But I sure would like to know.....

For RM49 get labor + oil filter and wheel alignment, i think it worth when the labor charge kick in ie at 15k service... because normally labor charge at Proton SC start for RM55 - RM255 depend on the service type.

but it not included Engine Oil???

It wouldn't any make sense if "10w30 can be used up to 40C". If an engine oil can only be used up to 40C, meaning by 120C, the engine oil has completely degraded on the very first crank of the engine.

All engine oil can withstand temperatures up to 120++, as that is the normal operating temperature of the engine.
Therefore, it is safe to assume that the engine oil chart doesn't represent which engine oil to use, but rather just a reference of the engine oil fluidity at a specific ambient temperature.

I would like you to show me an oil chart for ambient temperature 120C. There is no such thing. If there were, it probably will have an viscosity of 60W150.

120C is not ambient temperature but it is operating temperature. Dont confuse between both. Which country has an ambient temperature of 120C? Why the chart only shows up to 40C?

Ambient temperature only matters before and during cranking of the engine. Once the engine is running and as it warms up, operating temperature matters the most. Before I go deeply, I think we need to know more about engine oil basics. As we know, engine oil crystallize at low temperature and break up at extreme high temperature. Pure mineral oil wears out at a very fast rate. Oil producers usually rely on additives, especially Viscocity Index Improvers to make the engine oil more stable, improved longevity and available for wide range of usage. The higher the viscosity index, the more VII used in the engine oil production. But the downside about VII addictive is the VII molecule structure breaks down as the mileage gathers. That is why when a 10w30 engine oil when new will be reduced to 10w20 or even 10w10 when approaching 5,000km.

That above context is only applicable for mineral engine oils and differs for synthetic oil. Early days synthetic engine oil is made from organic materials usually not derived from crude petroleum, the common material being PAO. As the technology of refining petroleum gets hi-tech, oil makers now can derive synthetic quality oil out of crude petroleum from a process called hydrocracking. Hydrocracked oil are better quality than mineral oil, and its quality comes close to those of PAO origin synthetic oil. Synthetic oil usually are very well refined oil (muscularly stable) and relatively stable, they doesn't degrade as fast as mineral oil and therefore it doesn't need the usage of VII and since there is no longer reliance on VII, synthetic oils generally lasts longer (10,000km and above).

Semi-synthetic engine oil, as the name suggest, is a combination of both mineral oil with VII addictive with a portion of synthetic oil. Usually in 70:30 or 65:35 ratio, depending on the engine oil company blend. Due to the fact it still have VII, therefore, semi synthetic engine oils usually lasts up to 5,000kmn-7,000 km, depending on the blend of synthetic oil.

0w30, 5w30 and 10w30 all shares the same viscosity (SAE30) during operating temperature. What differentiate them is the condition (fluidity) of the engine oil during cold weather (0F/-17C), hence the different W ratings [0w, 5w, 10w]. Due to the weather condition in Malaysia, all engine oil will stay fluid all the time. That is why, it doesn't matter if one would use 5w30 or 0w30. All of them as long as conform to SAE30 specification, then it can be used.

Dont let your fear of voiding warranty rob off your common sense.

I agree...but remember API SL above... SM or latest SN

This post has been edited by azlan83: Jun 21 2012, 12:39 PM

We are discussing about the viscosity, not the API.

I know but the manual just say API SL above...so for sharing more grade suitable...i use 10w40 syntium 800 API SM can service after 10000km i think laaa...as my kelisa also 10000km service API SM haha....more save money

According to the oil chart, 10W and above is OK but, like I said, very strangely not 5W.

Regarding SM. I prefer SL.

Below link can explain to some of the questions post here.

http://www.ehow.com/about_6312890_motor-oi...0-vs_-5w30.html

http://www.worldsbestoil.ca/which-30-weight-oil.php

AMSOIL 0W-30, 5W-30 and 10W-30 synthetic motor oils are ALL 30 weight oils. The answer is that ANY one can be used regardless of the vehicle owners manual recommendation. To better understand, in a 5W-30 oil, the "W" stands for winter performance. In winter weather the 0W oil will flow like a 0W oil, and the 5W will flow like a 5W oil and a 10W will flow like a 10W oil just until the engine warms up. This multi-grade performance allows faster oil flow during cold start, however when the oil warms up, they all reach the designated 30 weight viscosity.

In order to understand the differences one has to first understand that the numerical values given to these various weight oils are strictly empirical numbers. For example, 0W does not mean that the oil has no weight. That is one of the reasons why we say it is strictly an empirical number.

In order to determine the differences between the three oils one has to look at the kinematic viscosity of each lubricant. The kinematic viscosity is essentially the amount of time, in centistokes, that it takes for a specified volume of lubricant to flow through a fixed diameter orifice at a given temperature.

Let's compare the kinematic viscosity of the three AMSOIL lubricants

AMSOIL 0W30 is 57.3 cST @ 40 °C, & 11.3 cST @ 100 °C
AMSOIL 5W30 is 59.5 cST @ 40 °C, & 11.7 cST @ 100 °C
AMSOIL 10W30 is 66.1 cST @ 40 °C, & 11.7 cST @ 100 °C

As you can see from the data above the kinematic viscosities are extremely close. Therefore, whether you use the 0W-30, 5W-30 or the 10W-30 is strictly a matter of choice. With the small differences in kinematic viscosity you would be hard-pressed to detect these differences on initial engine start-up without specialized engine test equipment.

All three oils are excellent motor oils and ANY one can be used in a vehicle which requires either a 0W-30, 5W-30 or 10W-30 oil as well as in several other engine applications including an engine which recommends a 5W- 20 oil.


This leads to the next topic: many people also ask us if the 0W-30 is too thin a viscosity oil for high ambient temperature operation. The answer is absolutely not! Thicker viscosity oils are not always necessarily better since in addition to its' various engine lubrication functions, an oil must also effectively transfer heat. Only about 60% of an engines cooling is performed by the engine coolant, and only on the upper half of the engine. The remaining 40% of an engines cooling is performed mainly by the engine oil.

Although a vehicle that is recommended to use a 30 weight oil can also use a 40 weight oil, it is usually not needed. You will gain absolutely no benefit from using a thicker viscosity oil if it is not needed. The only time we recommend a 40 weight oil, such as AMSOIL's 10W-40, to a customer in a passenger car or light truck application is if the vehicle's engine is excessively worn and consumes oil at a higher than normal rate or if the vehicle is being used for very severe duty, high load, high temperature applications.


In summary: The above article comfirm to V12compressor summary

However personally I tend to agree that the higher number would be better for Malaysia hot climax

This post has been edited by klate: Jun 21 2012, 02:19 PM

My SA called me. the car already in showroom

Maybe can get the car tonight or latest tomorrow

Regarding API ratings, it is only a general rule to govern the type of engine oil can be used for the consumer market. Normal consumer who isn't very knowledgeable about engine oil can always refer to API ratings when deciding which to choose for their car. The latest one is API SN, which was introduced not long ago. For engine oil with API SM onwards, there are slight revision, in which engine oil producer requires to add certain additives to protect the vehicle's catalytic converter (protects the environment at the same time).

All API rating engine oils are backward compatible, meaning SN can be used on a car requires API SJ or even SC, SD but not the opposite. A car which requires API SL onwards, means it can only take engine oil with rating of API SL, SM and SN.

---

Added on June 21, 2012, 2:28 pmsyntium 800 is a semi synthetic oil and therefore not very recommended to stretch it till 10,000km. Chances are, the oil is already a 10w20 when it hits 7,000km. For the rest of 3,000km, the engine is actually receiving half the amount of protection and lubrication it needed.

This post has been edited by V12Kompressor: Jun 21 2012, 02:30 PM

Noted...

congrats bro... finally....
have fun with it...

tx bro

hope i don't see all the problems brought up here. finger crossed

btw, is the security system installed enough? i guess not

any recommendation of security system that not so easily tampered with?

tx

In the past, yes, newer API rating are backward compatible. But nowadays, not necessarily correct. For example: for a car with flat valve tappet, SL is definitely better than SM to avoid engine failure.

Type of oil, Mineral or Semi or Synthetic, has absolutely no bearing on OCI. All must have same OCI. I would like to see a article in black & white saying otherwise.

If you guys don't mind lets address the viscosity and API rating discussion seperately to avoid confusion .

This post has been edited by klate: Jun 21 2012, 06:11 PM

As I mentioned earlier, it has got to do with Viscosity Index Improver.

I am very sure this isn't the first time you questioned someone about type of engine oil and its OCI and you have been shown tons of articles at the very first Exora Bold thread (which you subsequently ignore).

Your ignorance is not only contagious to the exora bold community, but seems to be spreading to preve community also.

Likewise, this discussion could only be continued if you manage to come to your clear sense.

This post has been edited by V12Kompressor: Jun 21 2012, 06:56 PM

I have show you tons of article in black & white saying you are absolutely wrong on "Synthetic last 10K and Mineral 5K" nonsense.

So I am waiting for you to show me, a black & white article, saying I am wrong instead. How's that for a deal? If you can't, you should stop telling lies. I bet you are a Synthetic oil salesman out to make a fast buck for keep telling lies.


I quote "To offset the higher cost of synthetic oil, some of the oil companies claim you can run the oil longer between changes. They say you do not have to change the oil every 3,000 miles. Valvoline does not make that claim. McClanahan says, "The additives in synthetics are superior but they still break down at the same rate and you need to replenish them often. We are unaware of any additive package that lasts longer than what the manufacturer recommends. Those 10,000-mile claims are ludicrous."


http://www.buzzle.com/articles/synthetic-o...e-interval.html

http://www.kitcarmag.com/techarticles/synt...tech/index.html