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  Mustangsandmore Forum Archive
  '64 1/2 to '68 1/2 -- The Classic Mustang
  1966 289 oil capacity?

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Author Topic:   1966 289 oil capacity?
mustangboy
Gearhead

Posts: 1343
From: Ont, Canada
Registered: Mar 2002

posted 10-17-2005 12:46 PM     Click Here to See the Profile for mustangboy        Reply w/Quote
I changed the oil in the 289 and put in 5 litres with a new oil filter.It was reading about a 1/4 inch above the full mark on the dipstick.I'm sure the stick and pan are original so I'm wondering what the actual oil capacity is supposed to be?I believe a liter is slightly less than a quart.

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68 J-Code,Sprint,306 4 speed,4.11s 13.69@101...............
66 coupe 289 4 speed, 3.20 cruiser http://mustangsandmore.50megs.com/MembersPics/mustangboy.html http://mustangsandmore.50megs.com/MembersPics/mustangboy2.html

66 fastback
Gearhead

Posts: 223
From: Califon, NJ 07830
Registered: Oct 2003

posted 10-17-2005 12:52 PM     Click Here to See the Profile for 66 fastback        Reply w/Quote
The actual capacity with filter change is 5 quarts. This equals 4.730368968779565 liters. Check to see if the dipstick tube has been replaced, they are very difficult to get fully seated and will cause a low oil reading on the dipstick.

mustangboy
Gearhead

Posts: 1343
From: Ont, Canada
Registered: Mar 2002

posted 10-17-2005 01:06 PM     Click Here to See the Profile for mustangboy        Reply w/Quote
Thanks for the quick reply.So it looks like I'm overfilling it a little by about 1/4 of a liter or so.I wouldn't have thought that small of an amount would have registered so high up on the dipstick .

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68 J-Code,Sprint,306 4 speed,4.11s 13.69@101...............
66 coupe 289 4 speed, 3.20 cruiser http://mustangsandmore.50megs.com/MembersPics/mustangboy.html http://mustangsandmore.50megs.com/MembersPics/mustangboy2.html

alcatraz
Journeyman

Posts: 7
From: Phoenix, Az
Registered: Oct 2005

posted 10-18-2005 03:07 PM     Click Here to See the Profile for alcatraz        Reply w/Quote
Did you start the car up before checking it?
Oil might not have found its way to the filter yet.

mustangs68
Moderator

Posts: 27681
From: Hampton Va MCA#39406 M&M #12 Member Mustang Club of Tidewater
Registered: May 99

posted 10-18-2005 04:08 PM     Click Here to See the Profile for mustangs68        Reply w/Quote
Thats the same question I was going to ask

Sam

mustangboy
Gearhead

Posts: 1343
From: Ont, Canada
Registered: Mar 2002

posted 10-18-2005 06:12 PM     Click Here to See the Profile for mustangboy        Reply w/Quote
Yes I had actually driven the car a little.I have the same type reading on my 68 but it has an aftermarket chrome dipstick and tube so I thought it might not be reading correctly.

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68 J-Code,Sprint,306 4 speed,4.11s 13.69@101...............
66 coupe 289 4 speed, 3.20 cruiser http://mustangsandmore.50megs.com/MembersPics/mustangboy.html http://mustangsandmore.50megs.com/MembersPics/mustangboy2.html

DidgeyTrucker
Gearhead

Posts: 1813
From: Greenbrier, TN USA
Registered: Oct 99

posted 10-18-2005 07:27 PM     Click Here to See the Profile for DidgeyTrucker        Reply w/Quote
The 1971 Boss 351 had a re-calibrated dipstick to show full with six quarts. The pan was the same. I don't see how an extra half quart is going to hurt. I used the same trick on the 429 I built for my '78 F-150. The motor now has 220,000 miles on it.

Tracy

alcatraz
Journeyman

Posts: 7
From: Phoenix, Az
Registered: Oct 2005

posted 10-19-2005 04:56 AM     Click Here to See the Profile for alcatraz        Reply w/Quote
Actually the oil does hurt the crank. Not just the extra oil but the oil you already have in there, as the crank turns it "slaps" thru the oil robbing you of horsepower. Ford added a windage tray to the boss 302 and claimed 25 h.p. increase. The 25 h.p. gained seems a bit high to me for this simple mod which is basically a baffle but at a higher rpm I could possibly see it appllying.

68 S-code GT
Gearhead

Posts: 3835
From: Sayreville, NJ, US
Registered: Mar 2000

posted 10-19-2005 09:01 AM     Click Here to See the Profile for 68 S-code GT        Reply w/Quote
Did you use the FL1 type filter or the short one? The short one hold about a half a quart less.

pmhvps
Gearhead

Posts: 734
From: Burlington,ON,Canada ,in the heart of the Golden Horseshoe.
Registered: Oct 2003

posted 10-19-2005 09:58 AM     Click Here to See the Profile for pmhvps        Reply w/Quote
Willy, I always put in 4 liters,(with filter change) run the engine,check for leaks,(and oil pressure) wait 5 minutes, check again and add a half liter, check again. I always keep the level a bit below full. Save the remainder of the oil for top up.
Mike.

mustangboy
Gearhead

Posts: 1343
From: Ont, Canada
Registered: Mar 2002

posted 10-19-2005 10:03 AM     Click Here to See the Profile for mustangboy        Reply w/Quote
I'm using the long style filter...I guess I'll take pmhvps advice and pour in 4 litres and then fine tune it from there.

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68 J-Code,Sprint,306 4 speed,4.11s 13.69@101...............
66 coupe 289 4 speed, 3.20 cruiser http://mustangsandmore.50megs.com/MembersPics/mustangboy.html http://mustangsandmore.50megs.com/MembersPics/mustangboy2.html

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