[DML] Re: Oscillation on braking

["David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>]

If the steering wheel is trying to move when you use the brakes either
one or both front rotors is warped. Easy to figure out with a dial
caliper. Before doing that though you should remove the wheels and
then reinstall torquing the lug nuts to the proper torque in an
alternating pattern. That may fix it. If it doesn't then you have to
check the rotors. This has nothing to do with the brake fluid. BTW
since you haven't flushed the fluids in 3 years you are due. Again my
advice is to use Castrol GTLMA DOT 4, NOT DOT 5 Silicone. You cannot
just go from DOT 4 (or 3) by flushing the DOT 4 out and then filling
and bleeding with DOT 5. The system should be taken apart and wiped
out and flushed with alcohol to remove all traces of the DOT 4. Since
you are not going to do that just stay with the DOT 4. Another point,
DOT 5 is a lot more expensive than DOT 4.
David Teitelbaum
vin 10757




--- In dmcnews@xxxxxxxxxxxxxxx, "dadoc2791" <gekko@...> wrote:
>
> When I first got my D (3+ years ago), I unkowingly topped off the 
> fluids with DOT 3 (brake and clutch).  I've never had problems with 
> either, although I know of the discussions here about DOT 4 and DOT 
> 5 and am considering bleeding and refilling with the DOT 5.
> Recently, I've noticed a definate back and forth oscillation of the 
> steering wheel when I brake from higher speed (like coming off the 
> freeway).  The front tires are almost new and I've had them re-
> balanced just a couple of weeks ago because of a vibration I'm 
> noticing between 68 and 80 mph (to no avail).  Visual inspection of 
> the brakes show slight (and I mean slight) wear on the rotors and 
> pads with lots of meat on them, yet.  Braking is positive and smooth 
> without chatter, squeek, grind or other "wear notice" types of sound 
> but I'm noticing this oscillation.
> Could this be the result of fluid problems and corrected by bleeding 
> and refilling the system with the proper grade of fluid or is it a 
> sign of something more problematic (like a warped rotor or pad/rotor 
> wear that's uneven)?
> Any suggestion welcome.
> 
> Thanx in advance,
> 
> Craig Werner
> 07181
>




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