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4-Oz Finish Line High Performance Mineral Oil Brake Fluid

$5
$8.99
+22 Deal Score
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Amazon has 4-Oz Finish Line High Performance Mineral Oil Brake Fluid on sale for $5. Shipping is free with Prime or orders $25 or more.

Thanks to Deal Hunter rsvpd for finding this deal.

Key Features:
  • Specifically engineered for use in bicycle hydraulic disc brakes
  • Formulated with a low viscosity base oil to yield superior level response, pad retraction, and consistent performance through a full range of operating temperatures
No Longer Available:

Walmart has 4-Oz Finish Line High Performance Mineral Oil Brake Fluid on sale for $5. Shipping is free with orders $35 or more.
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Edited March 6, 2021 at 09:23 AM by
sold/shipped by Amazon [amazon.com] has Finish Line 4 oz. High Performance Mineral Oil Brake Fluid for $5. Shipping is Free w/ Prime or orders of $25+

sold/shipped by Walmart [walmart.com] $5 Free shipping on orders of $35 or Walmart+ [dead]
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Created 02-25-2021 at 12:44 PM by rsvpd
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Joined Oct 2006
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#16
Quote from Epinard :
Can I use it to cook chicken?
It depends on what you want to achieve. Can you? Sure. Do you want to? Maybe not, maybe yes.
https://www.healthline.com/health...nstipation
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#17
Quote from tvtvtv :
IMHO its foolish to use this Finish Line fluid in Shimano or Magura brakes.
[...]
This is an informative post. I would also agree that it's not worth the risk to save few bucks. Others may have a different opinion.

That said, I would be surprised if a Shimano engineer said anything different. Despite that, there are hundreds of people that used Finish line instead of Magura Royal Blood or Shimano brake oil with no ill effects. Heck, there are even people that used baby oil and claim it works fine.
If I had no access to Royal Blood, as it was not uncommon 10-15 years ago, I'd use finish line which is easier to find. These days you can buy anything online though.
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Last edited by lzboy February 27, 2021 at 07:30 PM.
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#18
Quote from lzboy :
That said, I would be surprised if a Shimano engineer said anything different. Despite that, there are hundreds of people that used Finish line instead of Magura Royal Blood or Shimano brake oil with no ill effects. Heck, there are even people that used baby oil and claim it works fine.
I agree that's what we'd expect a Shimano engineer to say, but at least he provides a specific, technical rationale for the comment, and not a generic "only Brand X fluids can give top performance in Brand X brakes" sort of thing. So I tend to give some credibility to their comments.

But whatever ill effects you may risk, the spontaneous failure of your brakes is certainly not among them. My point, like yours, is essentially that you are better off with the OEM fluids if you have reasonable access to them. The $ savings when Finish Line if full price is like $1. Even a $6 savings with this discounted price is silly in the context of the money spent maintaining a modern mountain bike.

But I'm biased after my brief experience with Finish Line tubeless tire sealant. OMG what absolute garbage that is.
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#19
Quote from tvtvtv :
This was a good concise heads-up for the 90% of folks that immediately think cars/trucks when they see brake fluid.

However, a minor note for clarity regarding mineral oil as a brake fluid: the Shimano mineral oil has a boiling point of 536F, which qualifies as high temp in my book. In fact, its higher than even the dry boiling points of the DOT 3, 4 or 5.1 specs.

I'm NOT suggesting that this should be used in cars, just that mineral oil fluids are fully capable of tolerating high temperatures.
I was going to refute your temp claim but looked it up and I'll be damned, the "standard specs" for Dot4 really are much lower than I believed and your statement is true.

Most high-end automotive brake fluids will however easily exceed 536 and will surpass 600+ dry.
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#20
Pharmaceutical grade mineral oil is $2 per quart. If this is just mineral oil, it's expensive. Is this something else?

I would get the MSDS and check.

Edit: I checked the MSDS. It has less than 2% of some additives, so it isn't straight mineral oil.
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Last edited by Selman March 3, 2021 at 06:39 PM.
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#21
Now just to find a deal on blinker fluid....
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#22
why the hell is a bike deal on the front page?? this must be a conspiracy theory....I don't have any minerals that need to be oiled.
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#23
Buy this and they'll throw in a year supply of blinker fluid.
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#24
Quote from tvtvtv :
IMHO its foolish to use this Finish Line fluid in Shimano or Magura brakes. Perhaps a tiny bit less foolish in the Magura case, since their branded mineral oil is so expensive. Shimano, on the other hand, is pretty cheap: $11 for 100ml, which is about the same amount as this Finish Line four ounce bottle. Or $22 for a liter, which is half the price per ounce compared to this Finish Line on sale.

Mineral oil is an extremely broad term. The additives and chemicals that are included in proprietary fluids from Shimano and Magura are very specifically matched to the seals in their brake systems. These seals, especially those at the piston in the caliper, are sensitive to the oil compounds and critical to the brake feel and performance. A relatively small change in the swelling (or shrinking) of the piston/caliper seal can significantly change the piston/rad retraction behavior and feel at the lever, among other things.

No doubt this isn't rocket science, and if Shimano released their oil spec, a third party company could certainly manufacture a compatible fluid. But Shimano has never done that, and any claims of compatibility on the Finish Line bottle are arbitrary (Shimano has never authorized, approved or stated that any third party fluid is compatible with their brakes; neither has Magura).

Here's a quote from a brake engineer at Shimano, when asked if other fluids can be used:
Absolutely not, mineral oil is an unfortunate term to use because it is so vague and generic. The term mineral oil can describe a lot of different compounds. It's kind of like the term salt, which refers to much more than just table salt. Most of us are probably aware that the mineral oil that you buy at the drug store is not the same as the mineral oil we use in brakes, but that extends to different brands of mineral oil brake fluid as well. We should really call it "proprietary brake fluid" but I guess that doesn't have the same ring to it. I can tell you with absolute certainty that Magura fluid will destroy Shimano brakes in a very short amount of time. I've seen it happen several times. The rubber seals in the system have to be specifically designed to interact with a specific brake fluid. If you use a different fluid, the seals will interact differently. Specifically, when you put Magura fluid in Shimano brake, the lever feels spongy and the pad contact point changes because the square edge seal at the caliper is breaking free from the piston at a different time.
You need to stop drinking their marketing kool-aid. Sram engineers (makers of the best suspension for mountain bikes) have openly said it doesn't make any meaningful difference in the fork oil and that's super sensitive. Tons of people go so far as using baby oil in their mountain bike brakes (don't recommend it) without issues. As long as it's similar you won't have any issues, any suspension engineer will tell you the same thing, it's far better to swap out the oil regularly even if it's not the same weight than it is to leave old dirty oil in the system. If you can get the exact oil the brakes or suspension recommends by all means that's ideal but the reality is most bike mechanics don't and usually use one type they like across all the bikes.
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#25
Quote from Logan_71 :
To be absolutely clear, this is NOT for automotive use. It's not high temperature rated, nor is it a glycol base like cars need.
Ya we figured when they said mineral oil, but the post about shimano helps too.

I reccomend motul rbf600/660 and a set of endless or carbotech pads.
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#26
Don't know about you guys, but I'm going to wait for a sale on blinker fluid.
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#27
The dog got into it, and it killed off the flower garden when he hiked his leg on the plants...but the rainbow colors it left in the puddles were cool, so there's that.
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#28
Quote from tvtvtv :
IMHO its foolish to use this Finish Line fluid in Shimano or Magura brakes. Perhaps a tiny bit less foolish in the Magura case, since their branded mineral oil is so expensive. Shimano, on the other hand, is pretty cheap: $11 for 100ml, which is about the same amount as this Finish Line four ounce bottle. Or $22 for a liter, which is half the price per ounce compared to this Finish Line on sale.

Mineral oil is an extremely broad term. The additives and chemicals that are included in proprietary fluids from Shimano and Magura are very specifically matched to the seals in their brake systems. These seals, especially those at the piston in the caliper, are sensitive to the oil compounds and critical to the brake feel and performance. A relatively small change in the swelling (or shrinking) of the piston/caliper seal can significantly change the piston/rad retraction behavior and feel at the lever, among other things.

No doubt this isn't rocket science, and if Shimano released their oil spec, a third party company could certainly manufacture a compatible fluid. But Shimano has never done that, and any claims of compatibility on the Finish Line bottle are arbitrary (Shimano has never authorized, approved or stated that any third party fluid is compatible with their brakes; neither has Magura).

Here's a quote from a brake engineer at Shimano, when asked if other fluids can be used:
Absolutely not, mineral oil is an unfortunate term to use because it is so vague and generic. The term mineral oil can describe a lot of different compounds. It's kind of like the term salt, which refers to much more than just table salt. Most of us are probably aware that the mineral oil that you buy at the drug store is not the same as the mineral oil we use in brakes, but that extends to different brands of mineral oil brake fluid as well. We should really call it "proprietary brake fluid" but I guess that doesn't have the same ring to it. I can tell you with absolute certainty that Magura fluid will destroy Shimano brakes in a very short amount of time. I've seen it happen several times. The rubber seals in the system have to be specifically designed to interact with a specific brake fluid. If you use a different fluid, the seals will interact differently. Specifically, when you put Magura fluid in Shimano brake, the lever feels spongy and the pad contact point changes because the square edge seal at the caliper is breaking free from the piston at a different time.
Shut up.
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#29
Quote from tvtvtv :
IMHO its foolish to use this Finish Line fluid in Shimano or Magura brakes. Perhaps a tiny bit less foolish in the Magura case, since their branded mineral oil is so expensive. Shimano, on the other hand, is pretty cheap: $11 for 100ml, which is about the same amount as this Finish Line four ounce bottle. Or $22 for a liter, which is half the price per ounce compared to this Finish Line on sale.

Mineral oil is an extremely broad term. The additives and chemicals that are included in proprietary fluids from Shimano and Magura are very specifically matched to the seals in their brake systems. These seals, especially those at the piston in the caliper, are sensitive to the oil compounds and critical to the brake feel and performance. A relatively small change in the swelling (or shrinking) of the piston/caliper seal can significantly change the piston/rad retraction behavior and feel at the lever, among other things.

No doubt this isn't rocket science, and if Shimano released their oil spec, a third party company could certainly manufacture a compatible fluid. But Shimano has never done that, and any claims of compatibility on the Finish Line bottle are arbitrary (Shimano has never authorized, approved or stated that any third party fluid is compatible with their brakes; neither has Magura).

Here's a quote from a brake engineer at Shimano, when asked if other fluids can be used:
Absolutely not, mineral oil is an unfortunate term to use because it is so vague and generic. The term mineral oil can describe a lot of different compounds. It's kind of like the term salt, which refers to much more than just table salt. Most of us are probably aware that the mineral oil that you buy at the drug store is not the same as the mineral oil we use in brakes, but that extends to different brands of mineral oil brake fluid as well. We should really call it "proprietary brake fluid" but I guess that doesn't have the same ring to it. I can tell you with absolute certainty that Magura fluid will destroy Shimano brakes in a very short amount of time. I've seen it happen several times. The rubber seals in the system have to be specifically designed to interact with a specific brake fluid. If you use a different fluid, the seals will interact differently. Specifically, when you put Magura fluid in Shimano brake, the lever feels spongy and the pad contact point changes because the square edge seal at the caliper is breaking free from the piston at a different time.
They don't need to release the oil spec. Any lab with any ability at all can fully analyze the oil and all additives in it.
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#30
Any deal for blinker fluid?
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