Re: Ford LV brake fluid use in older vehicles

Join Now

Posted to Technical Discussion Forum on 5/3/2026

[...trimmed text...]

FMVSS DOT 3 (including SAE J 1703 and ISO 4925 Class 3) allows up to 1,500 cSt@-40C FMVSS DOT 4 allows up to 1,800 cSt@-40C

SAE J 1704 and ISO 4925 Class 4 both only allow up to 1,500 cSt@-40C whic... Login to read more.