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Service bulletin No. 88-20

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10180510
Published by NHTSA2020-10-01
Manufacturer's numberNo. 88-20
Manufacturer's date2020-09-08
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CLUTCHES/BANDS

NHTSA's summary

Procedure instructions on how to address oil leaking from the double clutch transmission on the new 992.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Transmission and driveline, Automatic transmission, Engine oil and lubrication

Vehicles listed
PORSCHE 9112020
PORSCHE 911 CARRERA2020 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
No. 88-202024-02-08. Service bulletin. Technical information for a complaint - oil leaks on double clutch transmission
No. 19-232023-10-05. Service bulletin. Manufacturers certificate for an overview of approved Porsche A40 engine oils.
No. 18-232023-10-05. Service bulletin. Manufacturers certificate for an overview of approved Porsche C40 engine oils.
No. 17-232023-10-05. Service bulletin. Manufacturers certificate for an overview of approved Porsche C30 engine oils.
No. 16-232023-10-05. Service bulletin. Manufacturers certificate for an overview of approved Porsche C20 engine oils.
No. D6472023-09-09. Service bulletin. Parts information on parts withdrawal for the oil pump
No. 31-202020-10-01. Service bulletin. List of approved engine oils for all Porsche models since 2003.
No. 20202020-10-01. Service bulletin. Information on new special tool for offline updates of the PCM Versions 4 and 5.
WKH32020-08-05. Service bulletin. Porsche intranet posting for Porsche Workshop Campaign WKH3 - Replace drive shafts on the front axle.