Brake pedal started getting soft and brake fluid reservoir was low. Bought new master cylinder thinking old one was bad. After taking off wheels found leak at front left hose above caliper. Waiting for new Raybestos front brake lines to come in. Decided to replace front hub bearings and half shafts while Liberty was on the lift. Owners manual says to use dot 3 brake fluid. Question is which brake fluid works best dot3 or dot4?

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2005 Silver Liberty CRD
Provent, 3.7 intake, K+N filter
ARP studs, Hemi pu tcm
In tank harness/fuel pump
Airtex rear bag, Fujimoto valve
Upgraded lifters, exhaust valves, fuel head
Florida torque converter, ID trans pump
Transgo shift kit, GM fan
2 micron filter, Bilstein shocks
Viscous heater delete

dot3 or dot4, either will work just fine.

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Supporting Vendor and Moderator of LOST
05 Jeep Liberty CRD Limited
Ironman Springs/Bilstein/Shocks
Yeti StgIV Hot Tune
Week's BatteryTray
No FCV/EGR
Samcos/ProVent
SunCoast/Transgo
Carter Intank-pmp
2mic.Sec.Fuel Filter
Flowmaster/NO CAT
V6Airbox/noVH
GM11 Bld.fan/HDClutch
IronrockArms/wwdieselMount
98 Dodge Cummins 24 Valve