Ill just go over the facts ..
Sooty tail pipes on one side .
5 Ltrs of oil PER year .. excessive .. 1 ltr is closer to the norm .
No knocking noises .
No misfires and im guessing no fouled spark plugs .
For me its mid range bore score im afraid ..
Now .. ive seen cars with this go for several years .. a Boxster ive seen for 2 years with the same as you but is still not fixed and still going .
Ive also read on here 4k from fine to its had it .
There is no set rule im afraid.
Ive seen excessive bore sore and they smoke like an AOS failure .. its bad .. very bad .
Other faults .. yes but in this case i think not .. over fueling .. leaking injector , low compression .. basically anything that causes an incomplete combustion cycle ..
But with this there will be fault codes .. the car aint stupid .
Oil burning doesnt tend to give fault codes .. we are not talking pints of oil rather a spray or a dribble now and then and the car will adapt to this so fuel trim figures are something you could look at.
Too be honest you need a bore scope check done as that will confirm it one way or the other .
Imho the car wont go bang .. but it wont get any better ..
Its we buy any car or a rebuild im afraid and whilst i agree Hartech are the industry leaders any Porsche specialist can do the work .
resale value and Hartech is a Forum question and not one i concern myself with ... a little blunt but we all rebuild engines .
Edit ..
just to point out Bore score is groves worn into the cylider lining .. a channel that allows oil to bypass the piston rings and end up getting burnt along with the normal running ... drag your finger nails over a bar of soap .. same thing .
Sooty tail pipes on one side .
5 Ltrs of oil PER year .. excessive .. 1 ltr is closer to the norm .
No knocking noises .
No misfires and im guessing no fouled spark plugs .
For me its mid range bore score im afraid ..
Now .. ive seen cars with this go for several years .. a Boxster ive seen for 2 years with the same as you but is still not fixed and still going .
Ive also read on here 4k from fine to its had it .
There is no set rule im afraid.
Ive seen excessive bore sore and they smoke like an AOS failure .. its bad .. very bad .
Other faults .. yes but in this case i think not .. over fueling .. leaking injector , low compression .. basically anything that causes an incomplete combustion cycle ..
But with this there will be fault codes .. the car aint stupid .
Oil burning doesnt tend to give fault codes .. we are not talking pints of oil rather a spray or a dribble now and then and the car will adapt to this so fuel trim figures are something you could look at.
Too be honest you need a bore scope check done as that will confirm it one way or the other .
Imho the car wont go bang .. but it wont get any better ..
Its we buy any car or a rebuild im afraid and whilst i agree Hartech are the industry leaders any Porsche specialist can do the work .
resale value and Hartech is a Forum question and not one i concern myself with ... a little blunt but we all rebuild engines .
Edit ..
just to point out Bore score is groves worn into the cylider lining .. a channel that allows oil to bypass the piston rings and end up getting burnt along with the normal running ... drag your finger nails over a bar of soap .. same thing .