Doing an oil change

I

Ianrhall

Senior Member
Just doing an oil/filter change on my 53. Should I fill the oil filter canister with oil first? I had to suck quite a bit of dirty black oil out of there
Thanks
Ian
 
i always do, dont want any old oil with junk going back into the engine, thats why i change the oil in the first place, to get rid of that crap, use a sucksion gun to get left over oil out of filter, wipe it clean, put filter in then fill the cannister with oil slowly, let the oil flow into filter, that way the engine doesnt hve to wait to long for oil to build pressure at the crank and things, full flow or not it still takes time for the filter to fill
 
I didn't fill it, oil pressure came up pretty quick, think all is well.
Oil was very black! Been in there for one year and 3000miles
Ian
 
On my '40 I just drain everything and clean out and wipe the inside of canister then put in the filter. Add oil and good to go.

No leaks and I change every 1,500 miles each year.

Mike
 
WestCoast said:
i always do, dont want any old oil with junk going back into the engine, thats why i change the oil in the first place, to get rid of that crap, use a sucksion gun to get left over oil out of filter, wipe it clean, put filter in then fill the cannister with oil slowly, let the oil flow into filter, that way the engine doesnt hve to wait to long for oil to build pressure at the crank and things, full flow or not it still takes time for the filter to fill
Click to expand...

The restrictor will bleed off the same amount from the main oil system so there is not going to be any delay "for oil to build pressure at the crank". On a full pressure system the oil pump has to fill the oil filter before it build pressure in the oil system. With a flathead bypass system a very small amount of oil passes through the restrictor and through the filter and has no bearing on how fast the oil pressure builds up in the rest of the oil system.
 
Last edited:
why does Ford say to use 5 quarts of oil when mine shows full at four? I always use five as it doesn't seem to cause any problems. But why the disparity?
 
Oil is bypassed into the filter at a slower rate with the restrictor in the inlet line. It flows through the filter at a reduced rate then goes right back into the pan. You can put oil in there if you want but a lot of it will drain back into the pan over a period of time. The best policy is to fill to the full mark on the OEM dip stick. Some engines take 5 quarts and some don't so care has to be taken not to overfill. FoMoCo never used a full pressure filtration system in that era. If you want one, you have to modify a lot to get one to work and even then, the rear main will still be unfiltered straight out of the oil pump.
 
You must log in or register to reply here.
Back
Top