Some folks claim it's not safe in the cab....
Seems to me it's one of the safest places. In the cab it is least likely to be damaged in a wreck.

Obviously if it's leaking you need to fix that, and you'll smell it if it does so no surprises there.

Actually in 48 they were outside the frame and in 49 they moved inside the cab for years and years to come.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-