TPI 2043895/3 - condensed water formation on oil filler neck.
Technical product information Transaction No.: 2043895/3
Service info: condensed water formation on oil filler neck Release date: 11-Dec-2017
Customer statement / workshop findings
White paste/foam/sludge in oil filler neck.
.
.
.
.
.
Technical background:
Because of its high efficiency the engine EA288 has low waste heat. As a result, the temperature is too low for
the water in the filler neck to evaporate. The big temperature difference of the filler pipe/cap to the remaining
system/oil circuit leads to increased condensed water formation on the filler neck/cap. The resulting emulsion (of oil and steam) is deposited as oil sludge.
On the EA288 engine in the Caddy, T6 and Crafter the filler neck/cap is positioned directly in the air flow (no
engine cover panel). This assists the condensate formation.
Production change
-
Measure
Explain the following background to the customer:
The big temperature difference of the filler pipe/cap to the remaining system/oil circuit leads to increased
condensed water formation on the filler neck/cap.
The emulsion on the filler pipe/cap is must therefore be regarded as normal. A repair is not necessary.
But the emulsion can also be caused by external water supply, therefore the following points must be observed.
• To rule out other causes check the oil and coolant level.
.
Technical product information Transaction No.: 2043895/3
Service info: condensed water formation on oil filler neck Release date: 11-Dec-2017
Customer statement / workshop findings
White paste/foam/sludge in oil filler neck.
.
.
.
.
.
Technical background:
Because of its high efficiency the engine EA288 has low waste heat. As a result, the temperature is too low for
the water in the filler neck to evaporate. The big temperature difference of the filler pipe/cap to the remaining
system/oil circuit leads to increased condensed water formation on the filler neck/cap. The resulting emulsion (of oil and steam) is deposited as oil sludge.
On the EA288 engine in the Caddy, T6 and Crafter the filler neck/cap is positioned directly in the air flow (no
engine cover panel). This assists the condensate formation.
Production change
-
Measure
Explain the following background to the customer:
The big temperature difference of the filler pipe/cap to the remaining system/oil circuit leads to increased
condensed water formation on the filler neck/cap.
The emulsion on the filler pipe/cap is must therefore be regarded as normal. A repair is not necessary.
But the emulsion can also be caused by external water supply, therefore the following points must be observed.
• To rule out other causes check the oil and coolant level.
.
