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Oil Light Comes On When Braking

Started by challengermaniac, August 18, 2020, 09:30:00 PM

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challengermaniac

I have the standard dash in my 1970 Challenger with a 318 and auto and looking for ideas as to why the oil light tends to come on when braking on a forward downhill slope. 

Ideas and suggestions?
1970 Challenger Convertible EB5

1 Wild R/T

Check the oil level.... LOL.. But seriously, when you hit the brakes it forces the oil to the front of the pan, going down a grade forces oil to the front of the pan.... Combine the two & there's a good chance the oil pressure will drop because instead of oil the pickup sucks a little air..   Half a quart low will amplify this.. Half a quart overfill will reduce the likelihood of sucking air...  When you change the oil have you verified the mark on the dipstick?  Or just filled it to the mark?  A wrong stick could have you putting less oil in the engine than it needs.. This would be especially true if you have the oil changed vs doing it yourself...

If all else fails quit hitting the brakes.. :bradsthumb: :rofl:

anlauto

I've taught you everything you know....but I haven't taught you everything I know....
Check out my web site ....  Alan Gallant Automotive Restoration


Burdar

I made a baffle and welded it into the oil pan for this issue.  I tested it out with water when I was done and it really does do a good job of keeping fluid in the sump.  You could also temporarily add a mechanical oil gauge so you can see what the pressure is doing in real time.  A cheap one from a parts store will work.  I keep one in my tool box.

RUNCHARGER

My first 67 GTX would do that. Someone hadn't replaced the windage tray and they have the small oilpan. When I rebuilt the engine I installed a windage tray and it cured it. I agree on a 318 it should not do it if the oil level is at full.
Sheldon