Oil and water
CB -
In my humble opinion, even though the factory dash has gauges for oil pressure and water temp... ... . I like to know the actual numbers. The difference in oil pressure on a hi-mile engine of between 20 psi hot at idle and 10 psi hot at idle may not register well enough on the stock gauge and you wouldn't know it anyway, but I sure want to know about it. The only way to know is to have some numbers and that's why every car I have has gauges for the basic vital organs. I monitor everything because I can, and it is very reassuring to look at the oil and water to see that while cruising the oil pressure is 44 psi hot and 170* on the water temp. Towing they are slightly higher, but you'll just never know how low or high they are without the numbers.
... ..... plus... . gauges are cool.....
- Sam