huh? seriously? Engine oil can carry heat to which part? I thought they suppose to resist more heat and then your intercooler suppose to be the one doing the cooling job.

Intercooler is a device to cool down the intake air after the turbo, it has nothing to do with cooling down the engine moving parts or lubricant....

The engine oil film thickness or film strength actually increases as flow of lubricant increases....

A xW40 (higher viscosity) engine oil has only less than 10nm when it is flowing at the speed below 0.04 metre/second, But a xW30 (lower viscosity) engine oil can reach more than 13nm of engine oil film thickness when it is flowing at 0.08 metre/second.... The key of protection lies on the speed of lubricant flow, a lower viscosity oil which capable to flow at higher speed can actually provide better protection than higher viscosity oil which is prone to flow slower...

Engine oil that flow slow in oil gallery inside a glowing hot turbo charger will likely be having "coking" effect, the engine oil will be "over cooked" and turn into carbon deposit or sludge.... A couple of engine oil tests have actually address such issue, such as ASTM D6335 and Honda HTO-06....

Totally agree with you.. Intercooler works to cool down intake air so more air(o2) mass can be charge into combustion chamber..

but if rew-ing too hard on the turbo = oil may be going thinner, hence getting xw/40 wouldn't be much safer in case long distance / long term "harsh" driving? or is there any diff in both?

nevertheless, for service centre proton that accepts other oils, try Proton service centre @ puchong, proton edar~ Dumped Castrol Edge 5w/40 into my prevee this morning... Much Much better then previously using Synt 800 +_+"

This post has been edited by boonykun: Dec 4 2012, 04:03 AM

Well my knowledge is pretty limited in this area but from what I know and have been reading... some peeps who are using lower viscosity oil they gotta top up the engine oil occasionally because it got heated up too quickly and evaporate in their turbo charge ride turbo charge ride.

Also why would GTR and some other top performance car recommending 10W-60? base on your theory shouldn't they be using something lower?

Not many ppl use Delphi Engine Oil in Malaysia?

Singapore is very popular.

http://www.nissan-techinfo.com/refgh0v/og/gt-r/2013-Nissan-GTR.pdf, please refer to page 280...never mention 10W/60..only 0W/40.. so what make you think the preve cfe low boost turbo need xW/50??

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Added on December 4, 2012, 12:11 pmbecause delphi oil is made in singapore or and some from thailand

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Added on December 4, 2012, 12:33 pm Let's compare this 3 technical datasheet , a) petronas synthium 800 10w/40, b) castrol edge 5W/40 & c) mobil 1 5W/30

a) http://www.mymesra.com.my/microsite/lubric...00SM_10W-40.pdf

b) http://www.opieoils.co.uk/pdfs/castrol/cas...-edge-5w-40.pdf ( assume this is the same as what we get in Malaysia, cannot get from castrol malaysia website and that is the reason why i never use castrol)

c) http://www.mobil.com/Malaysia-English/Lube...bil1_5W-30.aspx


Look at the flash point (higher is better), which among 3 got better number? why? Fresh oil will get thinner with heat ... but lousy oil will get thicker when expose to heat ( oxidation, sludge and carbon)


why you feel better with castrol edge 5W/40 compare to synthium 800? first is because of fresh oil and filter, second, look at the kinematic viscosity at 100 deg C... castrol is thinner , thus you feel much better.. I believe by going to xW/30 you will say WOW!!!

p/s I am not marketing any of above mentioned oils..

This post has been edited by pumpman: Dec 4 2012, 12:59 PM

I'm so sorry for asking.

I've been servicing my car at one particular workshop for the past 4 years.
They use Total. Charge me RM100 per service.

Now a friend of mine suggested me another shop as he said the workmanship is good and he checks the car throughly unlike my usual shop.

So I want to try it out. Problem is that I have to provide my own engine oil.

Which brand and oil should I use?

I drive a
Proton Waja 1.6 2006 Campro.

Thanks!

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Added on December 4, 2012, 9:30 pmI just bought Mobil Super S (10W-40) at Carrefour Bandar Tun Hussein Onn for RM100. Normal price is RM107.


This post has been edited by barca96: Dec 4 2012, 09:30 PM

Mobil Super S 10w40 is just fine. Don't worry.

This post has been edited by chemistry: Dec 5 2012, 01:20 AM

10w30 is recommended in owner manual.... Is 10w40 a more rational/better choice? or Proton had made a mistake in choosing right viscosity?

Recently the workshop that I used to service said the Petronas
Synthium 800 5w30 was no more....now replaced with 10w40/10w30

I ask around Petronas and they also say the same.
only 10w available on shelves.

I've serviced using this oil for many times already
and collected the left over oil.
I've nearly got a bottle of 4L( enuf for 1 service)
now they say no more in production so how?

can anyone verify this?

Don't worry, you can buy Perodua 5w30, API SM, it is semi syn and it is made by Petronas... and it is cheaper than Syntium 800.

Oh the one with the gold cap/bottle izzit? maybe buy it from

so the petronas syntium 800 5w30 is really gone?

http://www.mymesra.com.my/?ch=mm_2011&pg=p...pl=2011_article

http://eolcs.api.org/licenseAgreementService.aspx?id=1096

According to Petronas Dagangan web, Syntium 800 5w30 semi syn is API SM and ILSAC GF-4 certified

According to API web, Syntium 800 5w30 semi syn is now API SN (one notch above SM) certified with "resource conserving"... without any ILSAC

ILSAC GF-4 is no longer valid after 30th September 2011 and it is now replaced with GF-5... and Syntium 800 is not ILSAC GF-5 certified/approved... technically, this oil can be considered quite a good oil before 30th September 2011, but judging by current standard, it has not been able to meet current ILSAC standard yet... So why not looks else where for 5w30 which is API SN, ILSAC GF-5 approved?

Be very cautious not to choose oil without official API or ILSAC approval.... All official approvals can be checked here http://eolcs.api.org/, it is always up to date...

never knew it was SN coz i always see it labeled as API-SM?

I changed to this oil after realizing that perodua's oil was API-SL.

which was inferior compare to API-SM?

any oil can recommend which is API-SN and ILSAC GF-5?

There are 2 Perodua 5w30 oil, the one packed in silver bottle is claimed to meet API SL standard, another one that is packed in gold coloured bottle is claimed to meet API SM standard...

I don't need to recommend you which 5w30 oil is API SN and ILSAC GF-5 approved, because there are many active oil sellers here in this forum, very soon they will post up their products and next thing you know you will PM them for price....

Hi sifu, which oil is better for SuV...5W-40

Pakelo
Q8
Torco

I vote pakelo

Care to elaborate more?

In Europe only group 4&5 base oil can be classified as synthetic. Q8 tried before so so only..