What is the shelf life of motor oil sealed and if the seal is open?
Everything I read about brake fluid says that you should discard whatever you don't use after you break the seal. Is there something I can do so I don't have to throw it away?
One more question ... Can I use Teflon Tape on a Drain Plug in place of a plastic washer? Will it hold up to the heat?

Thanks for your replies

 

In terms of the motor oil sealed and resealed well would fall into the same category. I've never heard of shelf life on it. If there's a dating on it, I've never noticed. Most of the time it's bought to be used in a relativiely short time, maybe six months.

In an opened container brake fluid can absorb moisture which leads to problems in a brake system. A brake system reservoir has a diapraghm that contracts with a reduction in brake fluid which keeps the air/moisture out of the master cylinder.

Teflon tape shouldn't be used to seal in an application where a nylon washer is required. Heat really isn't the issue, but the type of sealing design. The washer is compressed and seals by that pressure. Teflon tape is normally used on a pipe type thread. In that design you have a tapered female and male thread that tighten into each other. Those threads compress the tape and seal with it.

Hope this helps,

Bob