The 150 gram tube works fine unless you have multiple cars that you are working on. Otherwise, it just sits on the shelf waiting to get squished at an inconvenient spot. Ask me how I know. I use lots of dielectric grease so I have a big tube. Things I use rarely, I get as small a tube as possible.

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01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow