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I just bought some Motul DOT 5.1 and it says on the front label: "NON-SILICONE base DO NOT mix with DOT 5. DOT 3 and 4 are compatible." The requirements for brake fluid is defined by a few internationally recognized standards organizations. The advantage of the Citroën LHM mineral oil based brake fluid is the absence of corrosion. Seals may wear out at high mileages but otherwise these systems have exceptional longevity. It cannot be used as a substitute without changing seals due to incompatibility with the rubber. [17] [ user-generated source] Compressibility [ edit ] Mobil Brake Fluid DOT 4 is recommended by ExxonMobil for use in applications requiring disc, drum and anti-skid braking systems used in average to high performance vehicles requiring DOT 3 or DOT 4 level performance. Recommendations for use include:
Brake Fluid: What you Need to Know [Part 2] – Standards Brake Fluid: What you Need to Know [Part 2] – Standards
j_cd wrote:I'm not sure which year Volvo switched from DOT 3 to DOT 4(+). The '98 manual says DOT 4+. My guess is, the Volvo engineers liked that DOT4+ fluid, but it didn't really catch on, and our brakes are fine with regular. by moonweasel» 03 Apr 2018, 17:56» in V70, S60, V70-XC and XC-70 Cross Country 2001-2007 2 Replies 1117 Views Last post by moonweasel There are based on two materials: Glycol based ("traditional" brake fluid) and Silicone based. DOT5 is exclusively silicone based because only silicone meets the criteria specified by the DOT5 standard. However mixing for example Glycol DOT3 with Glycol DOT4 would give unpredictable performance. Nowhere have I seen anything saying "this is ok". I suspect the reason is that a mixture of formulations may give an unproven boiling temperature. Most brake fluids used today are glycol-ether based, but mineral oil ( Citroën/ Rolls-Royce liquide hydraulique minéral ( LHM)) and silicone-based (DOT 5) fluids are also available. [1] Standards [ edit ]
Correct Mercedes-Benz Brake Fluid
Most Brake fluids are manufactured to meet standards set by international, national, or local organizations or government agencies.
DOT 4 Plus Brake Fluid | Bob Is The Oil Guy DOT 4 Plus Brake Fluid | Bob Is The Oil Guy
The difference between them is a specificed standard regarding the boiling temperature, which rises as the DOT number rises, and amount of water absorption. Hey toolman_johnny, you are trying to prove a point [which one?] but you missed again on the facts. You just want to prove that people who tried and gave [correct] answers are wrong. The proper DOT5.1 brake fluid is available even at NAPA. by eamonnpetty» 30 Jul 2019, 06:29» in V70, S60, V70-XC and XC-70 Cross Country 2001-2007 5 Replies 1627 Views Last post by abscateOnline Browsing Platform ISO 4925:2020 - Road vehicles -- Specification of non-petroleum-base brake fluids for hydraulic systems". www.iso.org. For a faster reaction of the ABS and ESP systems, DOT 4 and DOT 5.1 brake fluids exist with low viscosity meeting the maximum 750 mm 2/s viscosity at −40°C (−40°F) requirement of ISO 4925 class 6. [2] These are often named DOT 4+ or Super DOT 4 and DOT 5.1 ESP. You’ll realize that most of these organizations have different names for the grades/classes. Most of us in North America will probably be familiar with “DOT 3” or “DOT 4” brake fluid as defined by the FMVSS 116 standard. While the different standards offer different names, they tend to mostly all overlap and agree.
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