Recommended Time and Mileage Based Maintenance Service Intervals for Porsche 911 GT3 – 991
Porsche 911 GT3 | 2013 – 2019 | GT3
Standard maintenance on the Porsche 911 GT3 991 models is very straightforward and well laid out. The 911 GT3 has always been a race car on the street and therefore some of its maintenance requirements are enhanced versus a standard road car. The Porsche 911 GT3 991 cars for example, require a spark plug replacement every 12K miles and the oil change interval is recommended at 6K miles. We recommend the services of an expert Porsche shop for maintenance of your 911 GT3. If you predominately use your GT3 for track driving, you may want to see the advice and services of a GT car specialist shop.
To keep your 991 GT3 healthy, we recommend you inspect the car and change the engine oil and filter annually or every 6K miles. Major maintenance intervals on the 911 GT3 991 versions were planned for 24K miles or 4 years. There are however, additional service items required at 2 and 6 year intervals. In addition, we recommend a PDK clutch fluid replacement at 48K miles or 4 years. See below.
Safety and Maintenance Inspection
Every annual service should include a rigorous safety and maintenance inspection. It’s essential this is carried out by a highly skilled Porsche technician who knows the likely wear characteristics of your GT3 and can identify issues of concern at an early stage. A thorough inspection should reveal maintenance items that have been influenced by track driving or by local environmental conditions.
Some maintenance items are described as “lifetime,” such as coolant, for example. It’s important during the inspection to discover the health of these “lifetime” items. If you need cold weather protection from your coolant, you’ll find the “lifetime” is considerably shorter than you might expect! Identifying mechanical problems at an early stage allows planning and budgeting for the necessary work.
Porsche 911 GT3 Maintenance Recommendations – 991
Annual Maintenance or Every 6K Miles:
Change engine oil and filter
Update or replace maintenance items based on inspection
Replace engine air intake filters (GT3 RS)
Add the following maintenance items to the annual service, based on the time or mileage intervals shown below:
If you plan to take your 991 GT3 to the track for some fun, there are different maintenance considerations to make. In general, track driving will speed up the requirements for maintenance and the replacement of service items. Most track day companies, groups and the PCA HPDE, will require a safety inspection be completed by a Porsche repair shop. However, you should view the safety inspection as the minimum requirement for having a safe day out at the track with your Porsche.
If you’re pottering around in the novice group at a track day, most of the standard maintenance service items on your Porsche are up to the job. Once you progress to more spirited driving in the advanced run groups, it’s quite easy to quickly exceed the performance of those standard service items, especially if you are running multiple track days in a season.
At this stage, it’s extremely important not only to complete a safety inspection, but also to radically speed up maintenance. For example, a brake fluid flush and oil change before each event is a sensible approach. Likewise, a spark plug change after two events will keep your engine running healthy under track conditions.
There are upgrades to standard maintenance items that can help prevent over-driving. For example, Castrol SRF brake fluid will be far more durable than the standard brake fluid. There are better engine oil recommendations for the track versus the standard Mobil 1 factory refill. As your driving progresses, it’s also worth considering different brakes and tires. A specialist Porsche shop with track experience, can better help you understand the increased maintenance requirements for your car.