What type of oil does a 1998 Porsche 911 take?

The 1998 Porsche 911 requires API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F). The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Carrera 4 configuration.

How much oil does a 1998 Porsche 911 need?

The 1998 Porsche 911 takes 10.00 QTS. (9.46 L) of engine oil with the filter replaced.

Can I use synthetic oil in my 1998 Porsche 911?

Yes — synthetic oil that meets the API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F) specification is acceptable and often preferred for better protection and longer change intervals.

What happens if I use the wrong oil in my 1998 Porsche 911?

Using oil that does not meet the API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F) specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.

Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

1998 Porsche 911Oil Type & Capacity

OEM spec from the factory service manual for the Carrera 4 variant.

Quick Answer

Oil Type

$API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F)

Capacity (w/ Filter)

10.00 QTS.

9.46 L

Variant

Carrera 4

Note: Manufacturer's approved fluid only.

This vehicle's factory manual

1998 Porsche 911: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.

Open this vehicle’s service manual

Sister site: See this spec on WhatTypeOfOil.com — our quick oil type & capacity lookup for every vehicle.

Other specs:All specs

What You'll Need

Engine Oil

$API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F) for Porsche 911

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Frequently Asked Questions

What type of oil does a 1998 Porsche 911 take?: The 1998 Porsche 911 requires API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F). The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Carrera 4 configuration.
How much oil does a 1998 Porsche 911 need?: The 1998 Porsche 911 takes 10.00 QTS. (9.46 L) of engine oil with the filter replaced.
Can I use synthetic oil in my 1998 Porsche 911?: Yes — synthetic oil that meets the API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F) specification is acceptable and often preferred for better protection and longer change intervals.
What happens if I use the wrong oil in my 1998 Porsche 911?: Using oil that does not meet the API - SAE 5W-30, 10W-30 (Below 14Deg.F), 10W-30/40, 15W-40 (Below 50Deg.F), 15W-40, 20W-40/50 (Above 50Deg.F) specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.