I use this one on my 71 VW Bus and will get another one for the speedster soon. I am very happy with it. I have the Dual sensor which I use one on the Oil pressure switch and the other one on the 3rd cylinder head bolt.
https://engineguard.com.au/
It is pretty small and pretty loud.
jc
Hi JC
I looked at the EngineWatchdog which has a two line display but it is a very big unit.
EngineGuard....is is very big? I am trying to think of where I could put it discreetly and of course I still have to run all the wires to the front from the back which is not an easy task argh.
I sometimes think I should have run a second full wiring harness from back to front so that I could tap in whenever I wanted to add something. _