[MiraclePieCo]

LOTS of guys use Dolphins in their trucks; if you look at Ebay trucks for sale you'll find the majority have Dolphins - probably because they are so economical. They look much better since they removed the fish logo from the faces.

I have a set of Dolphin quad gauges in my '49 panel truck, but for some reason the temp and oil pressure gauges read low. I know the OP gauge is wrong because I verified it with a mechanical gauge. I changed the OP sending unit but it made no difference. Dolphin tech department said it was because I'd used thread sealant on the senders thus reducing the ground, but running a ground wire directly to the sender made no difference. I haven't heard of anyone else having this problem so apparently I just got a bad gauge. Too late to change it however since the warranty expired while they sat in my shop waiting to be installed.