Technical product information
Topic
Market
area
Brand
Transaction
No.
Level
Status
Release
date

W12 - Oil leak from engine
Australia E04 Bentley rest Asia and Australia (6E04),China 723 Volkswagen (Anhui) Automotive CO (6723),China 796 VW Import
Comp. Ltd (Vico), Beijing (6796),Germany E02 Bentley rest Europe (6E02),Japan E03 Bentley Japan (6E03),Korea, (South) E08
Bentley South Korea (6E08),United Arab Emirates E06 Bentley Middle East and Africa (6E06),United Kingdom E01 Bentley UK
(6E01),United States E05 Bentley USA and rest America (6E05)
Bentley
2053350/5
EH
Released for publishing
26-Sep-2023

New customer code
Object of complaint
Complaint type Position
whole vehicle -> vehicle areas -> engine compartment leaks -> oil leak

Vehicle data
New Continental GT/C and New Flying Spur
Sales types
Type

MY

Brand Designation Engine code Gearbox code Final drive code

3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S31BB
3S31EB
3S31EB
3S31EB
3S31EB
3S41BB
3S41BB
3S41BB
3S41BB
3S41BB
3S41BB
3S41EB
3S41EB
3S41EB
3S41EB
ZG21BB
ZG21BB
ZG21BB
ZG21BB
ZG21BB
ZG26BB
ZG26BB

2018
2019
2020
2021
2022
2023
2024
2021
2022
2023
2024
2019
2020
2021
2022
2023
2024
2021
2022
2023
2024
2020
2021
2022
2023
2024
2023
2024

E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E

INTERNAL

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*
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Bentayga
Sales types
Type
4V14A9
4V14A9
4V14A9
4V14A9
4V14A9
4V14A9
4V14A9
4V14A9
4V14G9
4V14G9
4V14G9
4V14G9
4V14G9

MY
2017
2018
2019
2020
2021
2022
2023
2024
2020
2021
2022
2023
2024

Brand Designation Engine code Gearbox code Final drive code
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*
E
*
*
*

Documents
Document name
master.xml

INTERNAL

Technical product information
W12 - Oil leak from engine

Transaction No.: 2053350/5
Release date: 26-Sep-2023

Customer statement / workshop findings
Oil leak from engine area.

Technical background
The breather return line and the oil dipstick tube O–rings can split causing an external oil leak.
This can be misdiagnosed as the engine sump leaking.

Production change
*

Measure
If an engine oil leak is found from the area shown in Figure 1, check the O-rings of both the breather return line and the dipstick tube for leakage.
The oil can run down the engine and settle on the sump leading to misdiagnosis, Figure 1.

INTERNAL

Figure 1
1. Firstly check the breather return line for signs an oil leak in area highlighted in Figure 2. Should a leak be evident, remove the tube and check
the O-ring for damage.
Power unit → Engine lubrication → 6.0 L W12 TSI → Oil breather system return line – To remove and fit

Figure 2
2. Check the dipstick tube for signs of an oil leak in area highlighted in Figure 3. Should a leak be evident, remove the dipstick tube and check
the O-ring for damage.
Power unit → Engine lubrication → 6.0 L W12 TSI → Assembly dipstick and tube – To remove and fit

Figure 3
Should either of the O-rings be damaged or leaking replace according to ETKA.

INTERNAL