Quote:
Originally Posted by barrybritcher
5.1 ideally as it's higher temp. But DOT4 is cheaper. I'd rather do more frequent fluid changes with the cheap stuff. (every other year)
If you are tracking it then go for 5.1
DOT 4 230 °C (446 °F) 155 °C (311 °F) 1800 mm2/s glycol ether/borate ester
DOT 5.1 260 °C (500 °F) 180 °C (356 °F) 900 mm2/s glycol ether/borate ester
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Thanks for your response - so is there anything special about Volvo's dot 4+ ? Is this equivalent to 5.1 ?