...aaand welcome back to 1950. Seems we have come full circle, but with a "little" more technology.
Just wait. Soon you wont have to worry about fluids n stuffs.
No fluids in a Lithium battery to check on.
In fact, id recommed you dont even get too close to those. The one you stare at all day and hold up to your head for extended periods of time is probably enough.

They will figure out how to make electric brakes that dont require brake fluid if they havent already. No tranny fluid anymore, because theres no transmission.
No differential oils, because there will be electric motors doing the differintiating...
And since we can make all the power we need to charge those fine machines from the sun, wind, water, unicorn farts, and kum-bay-yahs there should be NOTHING to worry about....
Yeah, I know its coming.
Hope I'm dead by then though.