Honestly the filter is that fine it will only regenerate when it needs to. If the dpf itself is not working
1) lights will come on
2) performance will suffer
3) it will smoke and smell
4) oil level will rise as unburnt diesel gets into sump - usually dpf have a min, max and a third mark on the dipstick
5) fuel level for a regen usually 1/4 tank or more. If it is on the minimum it may attempt to regen but abort before it has finished - check owners manual (the toyota site does not have a manual for the 2.8
Check your tailpipe it should be shiny clean no soot like us 120s.
What is the fuel/oil consumption as that is the only thing that will clog it provided it is getting hot enough in the first place - and it is because a dpf that attempts to go full cycle at too lower temperature smokes and stinks like hell.
Lastly oil spec is critical - low ash oil only as conventional oil topping up will knacker it
1) lights will come on
2) performance will suffer
3) it will smoke and smell
4) oil level will rise as unburnt diesel gets into sump - usually dpf have a min, max and a third mark on the dipstick
5) fuel level for a regen usually 1/4 tank or more. If it is on the minimum it may attempt to regen but abort before it has finished - check owners manual (the toyota site does not have a manual for the 2.8
Check your tailpipe it should be shiny clean no soot like us 120s.
What is the fuel/oil consumption as that is the only thing that will clog it provided it is getting hot enough in the first place - and it is because a dpf that attempts to go full cycle at too lower temperature smokes and stinks like hell.
Lastly oil spec is critical - low ash oil only as conventional oil topping up will knacker it
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