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YOUR RESEARCHC4S owners dirty rear bumper
Leading reported evidence
Clean 76k miles and i never add oil except
Suggestion or failed attempt
No successful repair reported for this finding.
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Suggestion · Original poster
Tailpipes clean for 76k miles and I never add oil except when I change the oil every 3k Also, It�s on the sides, not where the tailpipes are.
Leading evidence: 'Clean 76k miles and i never add oil except' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean 76k miles and i never add oil except' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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 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
Tailpipes clean for 76k miles and I never add oil except when I change the oil every 3k Also, It�s on the sides, not where the tailpipes are.
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.
13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My car always gets like a oily residue on sides of the rear bumpers after so many rides. Car does not burn oil so I�m ruling that out. It�s been this way since I�ve owned approx 3 years. Coolant system was just pressure tested and that�s fine. Anyone else experience this occurrence? I�m thinking road grime going through the slotted rear bumper maybe? Thoughts?
That's a pretty good guess. As long as it's not coming out of the tailpipes or from the engine itself it should be chalked up to dirty roads. You stated oil; that seems oddly specific. Are you sure it's not tar or such?
Tailpipes clean for 76k miles and I never add oil except when I change the oil every 3k Also, It�s on the sides, not where the tailpipes are.
Maybe it�s brake dust. They do dirty the heck out of the front rims. Sounds like nothing to sweat.
My bad. I read your first post inaccurately and assumed you meant around the tailpipes. I have not seen any such accumulation of "stuff" on the sides of the bumper cover since owning the car from 2014.
sorry...
Brake dust is easy to check. Take a white towel for each surface (microfiber naturally,) and give a little wipe on your rear wheel and a wipe on your bumper. It should have the same color and consistency. I feel like the "oily" part gives me some hesitation because I haven't come across brake dust that has an oily feel to it.
It�s brake dust. Sorry to sound the alarms.
Ones brake dust from front rim, the other is from the bumper. Maybe with the deep rims, 15mm spacers and bumper vents, the dust ends up there. Thanks all.
