Clutch and brake use the same fluid reservoir?
Hey, quick question.
I have a '92 Ford Ranger with the 4.0L Cologne pushrod V6 with the Mazda sourced 5spd manual transmission (it's 2WD) and while it runs fine, though uses oil quite a bit these days at 236K+ miles on it. When the weather got to where it remains in the 40's (mostly low to mid 40's during the day, 30's often at night), the brake idiot light comes on very briefly, especially when cold for a sec or so and then goes out when I apply the brakes, even gently to moderate at low speeds.
Doesn't do it all the time, but sporadically and it seems to becoming more frequent of late. No metal to metal noises that I can hear, brakes stop and feel fine otherwise. Even the ABS (rears only) light occasionally blinks (but they work otherwise) on when the brake idiot light pops on (it goes out after the bulb check but occasionally when I press the brakes partway down, it might come on for a sec before going back out).
I need to know if the clutch and brakes use the same reservoir or not because I need to verify if I have low fluid or not (it needs to be replaced but if it's shared with the clutch, the fluid should only be nearly 3 years old at best as I had the clutch slave replaced in early '09 and likely had all new fluid put in then). The clutch also had the new master clutch cylinder replaced in late '06 and it had a new clutch put in in late '05 and when I bought it in early '06, it had maybe 200 miles on the new clutch, front brakes, front wheel bearings and new oil in the transmission. BTW, had the oil changed in Sept at Precision Tune and they noted coolant leaking (does not seem to be doing it now that it's cold), needs new coolant and other fluids changed as well, which I haven't done yet.
Today, I've put about 46K miles on it.
Also, if the clutch and brake system share the same reservoir, how far up should the fluid be to ensure I have plenty, when I last checked, it was just below the screen and barely touching the bottom of it. Could it simply be that the fluid is old and that's all it needs or am I looking at a potential brake failure?