2021 Tesla Model S — brake fluid is old but still looks clean
This started as a small annoyance and I finally decided to track it down. 2021 Tesla Model S Long Range, about 48,500 miles. Fluid looks clear in the reservoir…
Maintenance & Service Intervals
Repairs & Ownership
2019 Ram 2500 — coolant is old by age but mileage is low
2019 Ram 2500 Cummins, about 32,500 miles. The vehicle has relatively few miles but the coolant is several years old. I am trying to prioritize maintenance by…
2013 Chevrolet Silverado 1500 — first used-oil analysis: what matters?
2013 Chevrolet Silverado 1500 LT, about 148,000 miles. I am thinking about sending an oil sample to establish a baseline.
SunBeltHaulerCommunity StarterJul 17, 20262013 Chevrolet Silverado 1500 LTColumbus2 replies0 helpful
2024 BMW i4 — brake fluid is old but still looks clean — Dallas owner question
This started as a small annoyance and I finally decided to track it down. 2024 BMW i4 eDrive40, about 37,500 miles. Fluid looks clear in the reservoir but has…
2021 Range Rover Sport — brake fluid is old but still looks clean
2021 Range Rover Sport HSE, about 37,000 miles. Fluid looks clear in the reservoir but has been in the car for several years. Would you change based on time/mo…
2024 Audi Q5 — coolant is old by age but mileage is low
2024 Audi Q5 Premium Plus, about 46,500 miles. The vehicle has relatively few miles but the coolant is several years old.
2018 Mercedes-AMG C63 — first used-oil analysis: what matters? — second opinion before I spend money
I am thinking about sending an oil sample to establish a baseline. For a normal street engine, which trends are actually useful over time and which one-off num…
2023 Subaru Outback — brake fluid is old but still looks clean — Nashville 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?
TowMechanicish155Community StarterJul 12, 20262023 Subaru Outback WildernessNashville11 replies0 helpful
2023 Mercedes-AMG C43 4MATIC — first used oil analysis — what should I care about?
Thinking about sending an oil sample in mostly to establish a baseline. For a normal street car, which numbers are actually useful over time and which ones do…
BoostedCollectorCommunity StarterJul 13, 20262023 Mercedes-AMG C43 4MATICDMV / Maryland5 replies0 helpful
2023 Lincoln Navigator Reserve — first used oil analysis — what should I care about?
Thinking about sending an oil sample in mostly to establish a baseline. For a normal street car, which numbers are actually useful over time and which ones do…
First used oil analysis — what should I care about?
1951 Ford F-1 Custom, about 8,200 miles. Thinking about sending an oil sample in mostly to establish a baseline. For a normal street car, which numbers are act…
2017 Nissan Altima — brake fluid is old but still looks clean — trying to narrow this down
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? Mileage is about…
2025 Lucid Air — coolant is old by age but mileage is low — second opinion before I spend money
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…
2022 Genesis GV70 3.5T — do shorter oil intervals actually make sense for my use?
Most of my driving is short trips with a lot of idling, but the factory interval is pretty long. I'd rather not waste oil, but I also plan to keep the car past…
2021 Honda CR-V EX-L — do shorter oil intervals actually make sense for my use?
Most of my driving is short trips with a lot of idling, but the factory interval is pretty long. I'd rather not waste oil, but I also plan to keep the car past…
1993 Mazda RX-7 Touring — coolant is old by time but low mileage
1993 Mazda RX-7 Touring, about 22,000 miles. Car only has 32k miles but the coolant is several years old. Would you change it based on age alone? I'm trying to…
Coolant is old by time but low mileage
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 maintenance that matters rather t…
2024 Mercedes-Benz C-Class — short-trip driving and oil-change intervals
2024 Mercedes-Benz C-Class C300, about 27,500 miles. The car gets lots of cold starts, idling and short trips with few long highway runs.
2024 Mitsubishi Outlander — coolant is old by age but mileage is low
2024 Mitsubishi Outlander PHEV SEL, about 9,000 miles. The vehicle has relatively few miles but the coolant is several years old. I am trying to prioritize mai…
WeekendOwner738Community StarterJul 9, 20262024 Mitsubishi Outlander PHEV SELDetroit1 reply0 helpful
2017 Audi Q7 — coolant is old by age but mileage is low
2017 Audi Q7 3.0T, about 112,500 miles. The vehicle has relatively few miles but the coolant is several years old. I am trying to prioritize maintenance by act…