Mazda 3 1.6 DV6C UOA Low TBN Qeustion

[Jetronic]

I belive it was it's first or second service, the ASX had mitsubishi engines prior to euro6 coming into effect.

Yeah some oil stays behind but that's no issue if you change on time. If the pick up screen is clean and the turbo oil feed and drain are clean, you should be good.

 

[mossietheno1]

Ah that's cool to know.
Its crazy to see how many car markers are using this engine now. The Toyota Proace is even using it, hopefully that means it a good engine and lots of cheap parts.
Thanks for all your help Jetronic.

 

[Jetronic]

The engines are very cheap. I've seen a long block for 1500 euro from peugeot.

 

[rotary 13b]

tbn is measured by FTIR , to have accurate result it should be measured by ASTM D4739

 

[kschachn]

Is TBN even a concern anymore? It has to have a minimum value per the license but after that does it even matter with today’s low sulfur fuels.

 

[Jetronic]

Is TBN even a concern anymore? It has to have a minimum value per the license but after that does it even matter with today’s low sulfur fuels.

2015 BMW X5 N55: Ravenol VST 5W-40 10,490mi UOA

Vehicle: Stock X5 with the N55B30 and ~152,000 miles Usage: Daily driver and tow vehicle for ~6,000 lbs car hauler. Miles on Oil: 10,490 (computer claimed 400+ miles remaining until change required) Time on Oil: 11 months UOA Purpose: Monitor TBN/fuel/viscosity to "fact check" the computer...

bobistheoilguy.com

considering he added 2 litres of make-up oil, I would say it still matters

 

[kschachn]

2015 BMW X5 N55: Ravenol VST 5W-40 10,490mi UOA

Vehicle: Stock X5 with the N55B30 and ~152,000 miles Usage: Daily driver and tow vehicle for ~6,000 lbs car hauler. Miles on Oil: 10,490 (computer claimed 400+ miles remaining until change required) Time on Oil: 11 months UOA Purpose: Monitor TBN/fuel/viscosity to "fact check" the computer...

bobistheoilguy.com

considering he added 2 litres of make-up oil, I would say it still matters

Yeah that engine seems to have a lot of blow-by or another mechanical issue.

 

[Jetronic]

it's still low sulfur fuel.

I would not discard TBN as unimportant, maybe more important as GDI becomes more common