fullymatted.
Back to search
Rennlist

Quick Question: LSD and Oil Mod

Add to repair workspace
Open repair workspace
Original source
7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHQuick Question: LSD and Oil Mod

Reported or suspected cause

oil sump modification

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that suspect a cause
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.

Suspected cause

The oil mod thing you're thinking about is likely the oil sump modification to increase it's capacity, attempting to prevent oil starvation during hard cornering.

Original post Read captured discussion
Quick Question: LSD and Oil Mod
Read full discussion summary

Leading evidence: 'oil sump modification' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'oil sump modification' (1 discussions; 0 report identifying it and 1 suggest it). No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 7 captured posts examined · 0 partial discussions

Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

oil sump modification

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.

Suspected cause

The oil mod thing you're thinking about is likely the oil sump modification to increase it's capacity, attempting to prevent oil starvation during hard cornering.

Original post Read captured discussion
Quick Question: LSD and Oil Mod
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

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

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Can someone please tell me if the 996 came standard with limited slip diff? I heard someone talk once about issues tracking 996s becasuse some oil mod needed to be completed. What is that and how critical is it? Thanks Tristan

POST 2Original post

Tristan, The oil mod thing you're thinking about is likely the oil sump modification to increase it's capacity, attempting to prevent oil starvation during hard cornering. You can perform a search for to see a good discussion of this issue and the 996. The bottom line is that it doesn't appear to be an issue with 02 and newer 996's. The 40th Anniversary 911 was the first 996 to have LSD and PSM. I find that the LSD works nicely on the track and for autocross's coming out of slow corners with the power on. I keep PSM on for track days (safety) and off for autocross's (better times). Hope this helps a bit.

POST 3Original post

I thought that the first model 996s, the early 99s had LSD...

POST 5Original post

99 C2's (not C4's) had LSD with optional T/C, or no LSD and PSM. From 2000 on all had PSM and therefore no LSD anymore... until the 40th anniv 911 which has PSM with LSD but with very low lock up rates.

POST 6Original post

Carlos: PSM wasn't available on the 996 C2 until EGas was made standard so it wasn't available in 1999. PSM has always been standard on the 996 C4 but is an option on the 996 C2 (it is part of the 40th Anniversary basic package though).

POST 7Original post

You are correct Steve, in 1999 only the C4 had PSM

This is a source reference. Confirm exact model applicability in the original material.