Coolant is old by age but mileage is low — 2021 Model S (Tampa)
Noticed this on the Model S: the vehicle has relatively few miles but the coolant is several years old. I am trying to prioritize maintenance by actual risk. W…
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Repairs & ownership
First used-oil analysis: what matters — 2013 Silverado 1500
First used-oil analysis: what matters — 2013 Silverado 1500. Worth a shop visit?
Long crank only after filling the fuel tank — 2020
The car starts normally most of the time, but after filling the tank it occasionally cranks longer and runs rough for a few seconds. Could EVAP/purge behavior…
2018 Infiniti Q50 — square wheel setup on a car that came staggered
I am considering a square wheel/tire setup so I can rotate tires and simplify track spares. Besides clearance, what handling changes should I expect? I am tryi…
Camry weekend drain measured while modules were awake
The shop checked current immediately after opening the doors. How can I avoid paying for a guess here?
C43 a/C is cold while driving, warm at stoplights
Noticed this on the C43: a/C gets properly cold on the highway but becomes noticeably warmer at long lights. It cools down again almost immediately once the ca…
Sanity check: coolant is old by age but mileage is low
Noticed this on the GS: the vehicle has relatively few miles but the coolant is several years old. I am trying to prioritize maintenance by actual risk. Would…
Silverado light-throttle shudder: engine or transmission — 2021 Silverado 1500 (Portland)
At steady speed with light throttle I get a vibration that feels almost like driving over fine rumble strips. It disappears if I accelerate. What's the cleanes…
TireDriverCommunity StarterSep 28, 20252021 Chevrolet Silverado 1500 LTZ 6.2Portland4 replies0 helpful
CTS-V rear end still feels floaty after new shocks
Shocks were replaced and there are no obvious loose parts, but the rear still feels vague over highway undulations. What alignment, bushing, tire or installati…
Recall shows for my model but not my VIN — 2006
In Boston / New England, i saw a recall announcement that includes my model year, but my VIN currently shows no open recall. Is that usually because only a sub…
PistonShopper69Community StarterSep 27, 20252006 Mazda RX-8 SportBoston / New England3 replies0 helpful
Brake fluid is old but still looks clean — Bay Area owner question?
Fluid looks clear in the reservoir but has been in the car for several years. Would you change based on time/moisture rather than appearance? Would you drive i…
Check-engine light turned itself off — still scan it — 2024 MDX
The light was on for two days and then disappeared before I could schedule service. Car feels normal. Is there still likely to be useful stored or pending data…
340i: humming rises with road speed, not engine RPM (Orlando)
Noticed this on the 340i: there is a low hum that rises with road speed regardless of engine RPM. I'm in Orlando.
RX-7: coolant is old by time but low mileage — 1993
Looking for a sanity check. Car only has 32k miles but the coolant is several years old. Would you change it based on age alone? I'm trying to prioritize maint…
PistonSeller89Community StarterSep 17, 20251993 Mazda RX-7 TouringUpstate New York21 replies0 helpful
Oil level dropping between changes — how much is too much — 2025 Macan
I've started checking the dipstick every 500 miles and the level is definitely moving down between oil changes. No obvious puddles and I don't see smoke. At wh…
EcoFanCommunity StarterSep 29, 20252025 Porsche Macan Electric 4SDallas–Fort Worth2 replies0 helpful
Delayed engagement into Drive when cold (Los Angeles)
After sitting overnight, shifting from Park to Drive can take a second or two before the vehicle actually engages. Once warm it behaves normally. Would you sta…
CTS-V coolant is old by age but mileage is low — 2018
The vehicle has relatively few miles but the coolant is several years old. I am trying to prioritize maintenance by actual risk. Would you replace based on tim…
Camaro single clunk over small sharp bumps — 2016
Quick one about the car. There is one front-end clunk over pothole edges and driveway lips, but larger smooth bumps do not reproduce it. How would you isolate…
GLE buzzing noise only at one engine RPM (California)
There is a light buzz from the dash at one narrow RPM range. It disappears above and below that speed. Any good method for locating trim resonance without rand…
ShopGeek776Community StarterSep 29, 20252022 Mercedes-Benz GLE 350 4MATICCalifornia4 replies0 helpful
2020 Kia Stinger — windshield replaced — does camera calibration matter (Austin)
A new windshield is installed and there is no dash warning, but the shop recommends camera calibration. If the manufacturer procedure calls for it, would you d…