I just checked the engine oil condition for my cars back home.

1) 13 year old vios with 215k on ODO. Last oil change was 10k km ago, used tesco fully synthetic (topped up a little 2 months ago with shell helix hx7 due to some oil consumption), colour looks like dirty cooking oil, strong petrol chemical smell but no burnt smell.
2) 4 year old santa fe diesel, 70k on ODO. Last oil change was 4.5k km ago, used shell helix hx7, colour comes out black, no burnt smell.

Question :
Is it normal for diesel oil to turn out in that condition after just 4.5k km? This car has gone through regular servicing in hyundai service centre and engine flushing was done for alternate oil change interval.

Does this mean that i have to use engine oil with stronger detergent or API rating? Shell hx7 is rated for API CF though.

Nice recommendation but if can't be found locally, not relevant anyway. Further, CJ rating may not be suitable as if you read through the pdf attachment given by Quazacolt, it is for diesel engines with more recent emissions control.

CI rating should be sufficient as Santa Fe diesel engine is more than 5 years old.

One more question.

For my old vios which is showing some signs of engine oil consumption, does that mean that I need to change to thicker viscosity oil or is it time to change the piston rings?

One more question.

For my old vios which is showing some signs of engine oil consumption, does that mean that I need to change to thicker viscosity oil or is it time to change the piston rings?

I just checked the engine oil condition for my cars back home.

1) 13 year old vios with 215k on ODO. Last oil change was 10k km ago, used tesco fully synthetic (topped up a little 2 months ago with shell helix hx7 due to some oil consumption), colour looks like dirty cooking oil, strong petrol chemical smell but no burnt smell.
2) 4 year old santa fe diesel, 70k on ODO. Last oil change was 4.5k km ago, used shell helix hx7, colour comes out black, no burnt smell.

Question :
Is it normal for diesel oil to turn out in that condition after just 4.5k km? This car has gone through regular servicing in hyundai service centre and engine flushing was done for alternate oil change interval.

Does this mean that i have to use engine oil with stronger detergent or API rating? Shell hx7 is rated for API CF though.

oh i see....learnt something today. So is engine flush something worthy to be done or just pure marketing gimmick by the various companies?

And, what is "PCV" that you're referring to?

Nice recommendation but if can't be found locally, not relevant anyway. Further, CJ rating may not be suitable as if you read through the pdf attachment given by Quazacolt, it is for diesel engines with more recent emissions control.

CI rating should be sufficient as Santa Fe diesel engine is more than 5 years old.

I realised I didn't fully understand what was stated in the attachment. In fact, CJ rated engine oils are suitable even for Malaysia Euro 2 grade diesel. Readings can be found in the FAQ in API website.

http://www.apicj-4.org/faqs.html (see item 7)

I realised I didn't fully understand what was stated in the attachment. In fact, CJ rated engine oils are suitable even for Malaysia Euro 2 grade diesel. Readings can be found in the FAQ in API website.

http://www.apicj-4.org/faqs.html (see item 7)

The CJ-4 rated oil are recommned for fuel sulfuer levels up to 500ppm, and is backward compatible. if you car spec for CI-4, you can use CJ-4.

The up coming API diesel oil are more confuse:
API CK-4, New HDEO category, expected to be backwards compatible.

API FA-4, NEW fuel-saving HEDO category, may not be fully backwards compatible. so 10W30 and 5W30 HEDO is on the way.

that is some interesting information you got there, you in O&G by any chance?

i'm not particularly looking into diesel so my info can be very limited.

Well, the following link have some information for the new API HDEO rating, it still in development stage, everything could change before the standard became official.

http://www.equipmentworld.com/new-heavy-du...u-need-to-know/

The new GF-6, API S? for petrol car engine oil will come with 0W-16 and 5W16, a new SAE viscocity grade too.

https://www.infineum.com/media/80723/api-en...sifications.pdf

guys, i am carrying this lubricants, is it ok to post it here?

yea i've posted before on xw16 which i am really looking forward to it since i've been on 0w20 myself

=edit=
wow nice pdf, have some clarification on base oil grouping as well!
pinned that doc from infineum on first page

Yeap, the engine oil will going thiner with every new API category.

The 0w16 is not the thiner oil in SAE oil chart. Honda wants SAE 8 and SAE 12 oil into the utral-fuel saving engine, and the requests for the new oil viscocity seem already approve by SAE.