High Mileage 300tdi - Oil Spec experience

S

slomofo

Well-Known Member

Posts

1,378

Location

Gone

• Sep 26, 2021

• #1

So, fresh oil and filter to book spec (10/40) bit tappety now compared to the black treacle that it replaced, but no oil smoke evident so rings/seals seem sound.

As it’s got 240k miles on it, have you got experience of say 15/40 being a quieter option on a nicely run in unit - what’s the trade off?

Interested in the high miler club experience

 

tottot

Well-Known Member

Posts

8,007

Location

west wales coast

• Sep 26, 2021

• #2

No trade off, just use a quality oil. Run mine on Fuchs Titan Truck for years.

 

Al2O3

Well-Known Member

Full Member

Posts

11,023

Location

North of the Wall

• Sep 26, 2021

• #3

Have you checked the tappet clearances?

 

Henry_b

Think outside, no box required.

Posts

15,506

Location

somewhere else

• Sep 26, 2021

• #4

At 240k it is well overdue a tappet clearance adjustment.

well worth doing, easy too.

As for oil keep to a 10w40 or 15w40, the latter being slightly thicker when cold.

 

S

slomofo

Well-Known Member

Posts

1,378

Location

Gone

• Sep 26, 2021

• #5

Henry_b said:

At 240k it is well overdue a tappet clearance adjustment.

well worth doing, easy too.

As for oil keep to a 10w40 or 15w40, the latter being slightly thicker when cold.

Click to expand...

I’ll get me feelers out! No idea what previous owner(s) did, judging by its condition I’d say untouched (except it does have new belt and tensioner which is a bonus)

Added to the list along with an unsplit intercooler and a radiator that has fins not holes….