Maintenance & Service IntervalsDiscussionCommunity Starter

2013 Toyota Prius — brake fluid is old but still looks clean

BoxerMilesCommunity StarterAug 5, 20262013 Toyota Prius ThreeRaleigh
2013 Toyota Prius Three, about 168,500 miles. 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? Mostly looking for the right next step.
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42 replies

BoxerMilesCommunity StarterCommunity StarterAug 5, 2026permalink
Following up on brake fluid is old but still looks: still happening, but I have better notes now. Might be overthinking it, but I'd rather overthink than overspend.
TowCommuterCommunity StarterCommunity StarterAug 5, 2026permalink
Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. Then you'll know the next fork. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. If they can't show the line item, I assume it's hiding. This is the version I'd tell a friend.
V8Builder435Community StarterCommunity StarterAug 5, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. That's where I'd start. Have you gotten a second quote in writing? Doing the boring step first on purpose.
UsedCarHauler419Community StarterCommunity StarterAug 5, 2026permalink
Owner notes beat generic advice here. On the 2013 Toyota Prius in Raleigh, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “brake fluid is old but still looks,” that was the fork that mattered for me. Learned this the expensive way on a previous car. Wrote this up on my lunch break.
BoxerMilesCommunity StarterCommunity StarterAug 5, 2026permalink
Thanks — that narrowed it. I'm going to try the simpler check on the 2013 Toyota Prius first. This is the version I'd tell a friend.
BoxerMilesCommunity StarterCommunity StarterAug 6, 2026permalink
Following up on brake fluid is old but still looks: still happening, but I have better notes now. If the story changes I'll post the new data.
TowCommuterCommunity StarterCommunity StarterAug 6, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. Then you'll know the next fork. I'd want that in writing, not as a promise. I'll update if anything new shows up.
WeekendNomad775Community StarterCommunity StarterAug 6, 2026permalink
Owner notes beat generic advice here. On the 2013 Toyota Prius in Raleigh, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “brake fluid is old but still looks,” that was the fork that mattered for me. Take it or leave it — that's what I'd do. That's my plan before I call anyone.
WeekendNomad775Community StarterCommunity StarterAug 6, 2026permalink
Owner notes beat generic advice here. On the 2013 Toyota Prius in Raleigh, I'd fix the thing you'll notice every day before chasing spec-sheet extras. That's where I'd start. On “brake fluid is old but still looks,” that was the fork that mattered for me. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. Take it or leave it — that's what I'd do. I'd rather look cautious in this thread than stuck later.
TowEnthusiast16Community StarterCommunity StarterAug 6, 2026permalink
Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. Then you'll know the next fork. That's the whole play. I'd sleep better after that step, even if it finds nothing. Might be overthinking it, but I'd rather overthink than overspend.
WeekendNomad775Community StarterCommunity StarterAug 6, 2026permalink
Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. Then you'll know the next fork. Not gospel, but it saved me a headache. If this is nothing, great. I want that in data.
TowEnthusiast16Community StarterCommunity StarterAug 6, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. That's where I'd start. Stop there until you know. I'm in no rush to be a hero on it.
BoxerMilesCommunity StarterCommunity StarterAug 6, 2026permalink
Thanks — that narrowed it. I'm going to try the simpler check on the 2013 Toyota Prius first. I'm keeping receipts and dates in one folder.
NewCarDetailer452Community StarterCommunity StarterAug 6, 2026permalink
Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. That's where I'd start. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. Had a similar mess a couple years ago and that's what finally sorted it. If this is nothing, great. I want that in data.
ShiftCollector423Community StarterCommunity StarterAug 6, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. That's where I'd start. Run the total, not the monthly, before you commit. I'm keeping receipts and dates in one folder.
FlatSixSeller714Community StarterCommunity StarterAug 6, 2026permalink
I'd push back a little: Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. Then you'll know the next fork. Any freeze-frame data saved? This is me being the wet blanket on purpose.
ManualDetailerCommunity StarterCommunity StarterAug 6, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. Was this after sitting overnight? Make the next action something you can finish this week. If the story changes I'll post the new data.
BoxerMilesCommunity StarterCommunity StarterAug 6, 2026permalink
I parked the 2013 Toyota Prius and wrote down what I already tested so I'm not repeating myself. I'm in no rush to be a hero on it.
UsedCarHauler419Community StarterCommunity StarterAug 6, 2026permalink
Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. I'd do that before spending real money. Had a similar mess a couple years ago and that's what finally sorted it. Might be overthinking it, but I'd rather overthink than overspend.
DealGeek577Community StarterCommunity StarterAug 6, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. I'd do that before spending real money. Learned this the expensive way on a previous car. I'm in no rush to be a hero on it.
UsedCarHauler419Community StarterCommunity StarterAug 6, 2026permalink
Owner notes beat generic advice here. On the 2013 Toyota Prius in Raleigh, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “brake fluid is old but still looks,” that was the fork that mattered for me. A shop burned me once by skipping that step. That's my plan before I call anyone.
UsedCarHauler419Community StarterCommunity StarterAug 6, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. That's where I'd start. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. A shop burned me once by skipping that step. I'll update if anything new shows up.
BoostWrenchCommunity StarterCommunity StarterAug 6, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. No need to make it theatrical. I'm in no rush to be a hero on it.
ManualMechanicish811Community StarterCommunity StarterAug 7, 2026permalink
That's a good start, but I wouldn't stop there. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. That's where I'd start. Learned this the expensive way on a previous car. This is me being the wet blanket on purpose.
BoostWrenchCommunity StarterCommunity StarterAug 7, 2026permalink
I'd push back a little: If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. Then you'll know the next fork. No need to make it theatrical. If the story changes I'll post the new data.
BoxerMilesCommunity StarterCommunity StarterAug 6, 2026permalink
Following up on brake fluid is old but still looks: still happening, but I have better notes now. I'll update if anything new shows up.
BoxerMilesCommunity StarterCommunity StarterAug 6, 2026permalink
Useful. I'll report back after I verify that on my 2013 Toyota Prius. Wrote this up on my lunch break.
NewCarGalCommunity StarterCommunity StarterAug 6, 2026permalink
Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. Then you'll know the next fork. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. Stop there until you know. Might be overthinking it, but I'd rather overthink than overspend.
ManualDetailerCommunity StarterCommunity StarterAug 6, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. Then you'll know the next fork. Have you gotten a second quote in writing? This is me being the wet blanket on purpose.
BoxerMilesCommunity StarterCommunity StarterAug 6, 2026permalink
Useful. I'll report back after I verify that on my 2013 Toyota Prius. If the story changes I'll post the new data.
EVGuy113Community StarterCommunity StarterAug 6, 2026permalink
Owner notes beat generic advice here. On the 2013 Toyota Prius in Raleigh, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “brake fluid is old but still looks,” that was the fork that mattered for me. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. I'd want a dollar figure or a measured spec, not 'should be fine.' If your situation is the opposite, ignore me. That's my plan before I call anyone.
BoxerMilesCommunity StarterCommunity StarterAug 7, 2026permalink
I parked the 2013 Toyota Prius and wrote down what I already tested so I'm not repeating myself. I'd rather look cautious in this thread than stuck later.
TowMechanicish588Community StarterCommunity StarterAug 8, 2026permalink
Not convinced that's the whole story. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. Then you'll know the next fork. If it doesn't change the out-the-door or the repair estimate, it's noise. Your commute and mine probably aren't the same, but the test still applies. Doing the boring step first on purpose.
NewCarDetailer452Community StarterCommunity StarterAug 6, 2026permalink
Owner notes beat generic advice here. On the 2013 Toyota Prius in Raleigh, I'd fix the thing you'll notice every day before chasing spec-sheet extras. That's where I'd start. On “brake fluid is old but still looks,” that was the fork that mattered for me. Learned this the expensive way on a previous car. That's my plan before I call anyone.
RoadCamperCommunity StarterCommunity StarterAug 6, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. I'd do that before spending real money. No need to make it theatrical. I've seen both outcomes, which is why I'd test instead of assume. Doing the boring step first on purpose.
V8Builder435Community StarterCommunity StarterAug 6, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. That's where I'd start. Was this after sitting overnight? A day of patience here is cheaper than a wrong part. If the story changes I'll post the new data.
V8Builder435Community StarterCommunity StarterAug 7, 2026permalink
Write down what you already tried. A second data point from another 2013 Toyota Prius owner helps more than a generic diagnosis. I'd do that before spending real money. Have you gotten a second quote in writing? This is the version I'd tell a friend.
ManualMechanicish811Community StarterCommunity StarterAug 7, 2026permalink
Don't overfit one forum story to your car. If it still isn't clear on the 2013 Toyota Prius, a specialist hour can be cheaper than another round of parts. I'd do that before spending real money. A shop burned me once by skipping that step. I'm in no rush to be a hero on it.
EVGuy113Community StarterCommunity StarterAug 7, 2026permalink
I'd keep this practical. Verify the cheap/easy branch on the 2013 Toyota Prius before a big repair or a big spend. That's where I'd start. This is from a 2013 Toyota Prius in Raleigh with 168,500 miles. Run the total, not the monthly, before you commit. Doing the boring step first on purpose.
BoxerMilesCommunity StarterCommunity StarterAug 7, 2026permalink
Following up on brake fluid is old but still looks: still happening, but I have better notes now. Wrote this up on my lunch break.
BoxerMilesCommunity StarterCommunity StarterAug 7, 2026permalink
Useful. I'll report back after I verify that on my 2013 Toyota Prius. I'm keeping receipts and dates in one folder.
ShiftCollector423Community StarterCommunity StarterAug 7, 2026permalink
Owner notes beat generic advice here. On the 2013 Toyota Prius in Raleigh, I'd fix the thing you'll notice every day before chasing spec-sheet extras. Then you'll know the next fork. On “brake fluid is old but still looks,” that was the fork that mattered for me. If it doesn't change the out-the-door or the repair estimate, it's noise. I'd rather look cautious in this thread than stuck later.
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