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Mixing types of engine oil

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YOUR RESEARCHMixing types of engine oil

Leading reported evidence

Replace oil, oil filter, air filter, and cabin air filter

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No successful repair reported for this finding.

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Unsuccessful attempts: 1
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Suggestion · Original poster
I'm planning to do some basic maintenance on my 996, like the changing oil, oil filter, air filter, and cabin air filter, but need to order the parts.
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Mixing types of engine oil

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Leading evidence: 'Replace oil, oil filter, air filter, and cabin air filter' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace oil, oil filter, air filter, and cabin air filter' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Replace oil, oil filter, air filter, and cabin air filter

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
I'm planning to do some basic maintenance on my 996, like the changing oil, oil filter, air filter, and cabin air filter, but need to order the parts.
Original post Read captured discussion
Mixing types of engine oil

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11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Rennlist: 1 discussions

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Generation: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm planning to do some basic maintenance on my 996, like the changing oil, oil filter, air filter, and cabin air filter, but need to order the parts. Since my engine oil is getting a bit low, and since I want to hit some canyon roads this weekend, I was thinking to add some new oil while waiting for the parts to arrive. I have no idea what oil is currently in the car, though. Will adding some Mobile 1 0W-40, and so potentially mixing different types of motor oil, have any drastic short term negative effects?

POST 2Original post

I think 5w40 is the approved viscosity other than that, it won’t hurt to mix brands, despite what you may read here

POST 3Original post

If you use Mobil 0-40, you have the best chance of matching factory fill. I don�t think there is any risk in mixing oils.

POST 4Original post

Quotes source post: 14939130

^^+1... "mixing oils" or topping off with a different oil is not going to cause potential problems akin to mixing coolant (coagulation, etc...). Just make sure you don't overfill...

POST 5Original post

Mixing oil is fine. Running out of oil is what yields drastic short term negative effects.

POST 6Original post

Mixing of oil will cause a chemical reaction resulting in production of toxic fumes and possible spontaneous combustion. It will also cause immediate IMS bearing failure, RMS leakage, AOS intermix, cylinder bore scoring, dropped valves, pulling to the left under braking, premature clutch wear, and your radio to play nothing but rap. Oh wait, I thought today was the 1st. Never mind!

POST 7Original post

Quotes source post: 14939484

You forgot spontaneous combustion, cracked coils and immobilizer malfunction.

POST 8Original post

Quotes source post: 14939484

You forgot to mention the dreaded sun visor delamination,

POST 9Original post

Quotes source post: 14939288

And overfilling can cause issues.

POST 10Original post

Mixing oil will also cause spontaneous cowlicks. Just make sure you change it every 60 days before it goes bad. (j/k!!! although I have had a tech swear that is the best plan to help put his kid through college)

POST 11 / ORIGINAL POSTEROriginal post

Awesome, thanks everyone! A friend told me it would cause my car to download more RAM, which was my major concern.

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