I have tried 2 separate Stant thermostats, first a 195 then a 180. Both did not do s#!t. My engine went near redline and I verified the temps with a non-contact IR thermometer. Base of water neck: 215 deg, water neck outlet: 110. Definately a POS thermostat.

 

Without thermostat, the car runs too cool. The temp hand barely rises and temps are verified around 110 to 140 on a warm day.

 

I remember reading something somwhere in the past about how only certain thermostats work well in Subarus. Can anyone tell me the "good" manufacturers? (besides Subaru....the closest dealer is about 2 hours away).

you just didn't buy the right one!

 

NAPA SUPERSTAT by stant HEAVY DUTY THERMOSTAT 530060 $6.99

 

fits 84 olds diesel 350, drill a bypass 1/8" hole, have had no problems

 

http://www.stant.com/index.cfm

Actually, OEM is the best and they arent that expensive.

OEM is the way to go....but its still the 190* or so temp...ive used the cheapo NAPA 180* tstat and never had a problem.

Thanks, guys. Looks like I'll be going to NAPA.

I am useing a thermos. from Napa /,drilled the hole I/16th. /but one that is rated for 160dg./..took care of the pinging sound since it lowered the temps