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Does too much oil slow a car down? #373962 07/13/09 02:17 PM 07/13/09 02:17 PM
Joined: Jan 2003 Posts: 11,711 Portage,michigan B B3422W5 OP I Live Here
B3422W5 OP I Live Here B Joined: Jan 2003 Posts: 11,711 Portage,michigan	Just curious what difference the amount of oil ran in a car affects ET. I generally run 6.5-7 quarts of oil, but currently have 8 in it. just curious what others have found/noted. 69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8

Re: Does too much oil slow a car down? [Re: B3422W5] #373963 07/13/09 02:36 PM 07/13/09 02:36 PM
Joined: Jan 2007 Posts: 3,695 nc E emarine01 master
emarine01 master E Joined: Jan 2007 Posts: 3,695 nc	If the oil level is high enough to effect windage than I would think yes, How much of an effect in ET who knows every combo is different , Its hard to guess whats goin on in he crankcase @ high rpm

Re: Does too much oil slow a car down? [Re: B3422W5] #373964 07/13/09 02:51 PM 07/13/09 02:51 PM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	As little oil as it takes to keep the warning lite off. Why did you feel the need to run more oil than your norm?

Re: Does too much oil slow a car down? [Re: B3422W5] #373965 07/13/09 02:53 PM 07/13/09 02:53 PM
Joined: Jun 2004 Posts: 1,217 Wellington, FL C cudabunch pro stock
cudabunch pro stock C Joined: Jun 2004 Posts: 1,217 Wellington, FL	Quote: Just curious what difference the amount of oil ran in a car affects ET. I generally run 6.5-7 quarts of oil, but currently have 8 in it. just curious what others have found/noted. OK and did it make any difference in your car? I run a quart more than what is recommended for the pan because the external line and filter hold oil also.

Re: Does too much oil slow a car down? [Re: cudabunch] #373966 07/13/09 03:13 PM 07/13/09 03:13 PM
Joined: Mar 2003 Posts: 2,499 PA moparacer top fuel
moparacer top fuel Joined: Mar 2003 Posts: 2,499 PA	Makes a tenth of a second difference in our 4 inch stroke 360... Too much oil is not a good thing.... 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174

Re: Does too much oil slow a car down? [Re: goldmember] #373967 07/13/09 03:20 PM 07/13/09 03:20 PM
Joined: Jan 2003 Posts: 11,711 Portage,michigan B B3422W5 OP I Live Here
B3422W5 OP I Live Here B Joined: Jan 2003 Posts: 11,711 Portage,michigan	Quote: As little oil as it takes to keep the warning lite off. Why did you feel the need to run more oil than your norm? its an 8 quart pan, i just filled it all the way up this time for some reason, instead of my typical 6.5 to 7 quarts 69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8

Re: Does too much oil slow a car down? [Re: moparacer] #373968 07/13/09 03:20 PM 07/13/09 03:20 PM
Joined: Jan 2003 Posts: 6,314 The Swamp MegaDart master
MegaDart master Joined: Jan 2003 Posts: 6,314 The Swamp	Quote: Makes a tenth of a second difference exactly what it cost me, I run my stuff 1/2-1qt less then advertised

Re: Does too much oil slow a car down? [Re: cudabunch] #373969 07/13/09 03:24 PM 07/13/09 03:24 PM
Joined: Jan 2003 Posts: 11,711 Portage,michigan B B3422W5 OP I Live Here
B3422W5 OP I Live Here B Joined: Jan 2003 Posts: 11,711 Portage,michigan	Quote: Quote: Just curious what difference the amount of oil ran in a car affects ET. I generally run 6.5-7 quarts of oil, but currently have 8 in it. just curious what others have found/noted. OK and did it make any difference in your car? I run a quart more than what is recommended for the pan because the external line and filter hold oil also. i lost a tenth somewhere, and am guessing having 8 quarts in it is where it went 69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8

Re: Does too much oil slow a car down? [Re: B3422W5] #373970 07/13/09 03:25 PM 07/13/09 03:25 PM
Joined: Dec 2006 Posts: 1,178 Indy FlyFish super stock
FlyFish super stock Joined: Dec 2006 Posts: 1,178 Indy	I did the same thing recently with my new build...I just thought a little extra oil for the new mill would be good insurance until I get to know the motor a little better. I have ~ 9 in it now, I ran 7 qt with the old motor. 67 Barracuda street car, 408, e85, 1.38 60', 6.44 @105.9 in the 1/8 mile, 10.19 @130.5 in the 1/4...so far....

Re: Does too much oil slow a car down? [Re: B3422W5] #373971 07/13/09 03:32 PM 07/13/09 03:32 PM
Joined: Jun 2004 Posts: 1,217 Wellington, FL C cudabunch pro stock
cudabunch pro stock C Joined: Jun 2004 Posts: 1,217 Wellington, FL	Quote: Quote: Quote: Just curious what difference the amount of oil ran in a car affects ET. I generally run 6.5-7 quarts of oil, but currently have 8 in it. just curious what others have found/noted. OK and did it make any difference in your car? I run a quart more than what is recommended for the pan because the external line and filter hold oil also. i lost a tenth somewhere, and am guessing having 8 quarts in it is where it went Easy enough to figure out.Next time out run it again and then pull off the oil filter, dump it and see if it goes faster.

Re: Does too much oil slow a car down? [Re: B3422W5] #373972 07/13/09 03:32 PM 07/13/09 03:32 PM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	"its an 8 quart pan, i just filled it all the way up this time for some reason, instead of my typical 6.5 to 7 quarts " I run an "8qt" pan and never have over 6 qts in it. At 5qts the warning lite will flicker during braking after a pass. I'm sure different combos have differing requirements,so a little testing would be a good idea.

Re: Does too much oil slow a car down? [Re: FlyFish] #373973 07/13/09 03:34 PM 07/13/09 03:34 PM
Joined: Feb 2005 Posts: 1,557 New Smyrna Beach FL S scottb pro stock
scottb pro stock S Joined: Feb 2005 Posts: 1,557 New Smyrna Beach FL	I told you that last wk 1 qrt is worth 1 tenth the test have been done to back it up

Re: Does too much oil slow a car down? [Re: B3422W5] #373974 07/13/09 03:37 PM 07/13/09 03:37 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Not shure about et loss but my car had no issues running 6 qts. in an 8 qt. pan even at 7000+ rpm`s I never lost pressure.....had 75 psi at 7500 rpm`s. Last edited by Thumperdart; 07/13/09 06:17 PM. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Does too much oil slow a car down? [Re: Thumperdart] #373975 07/13/09 11:11 PM 07/13/09 11:11 PM
Joined: Jan 2003 Posts: 20,765 A collage of whims topside Too Many Posts
topside Too Many Posts Joined: Jan 2003 Posts: 20,765 A collage of whims	Way back, a guy named Smokey Yunick put a window in an oil pan and observed how fill level affected the rotating assy. He found that the crank & rods are capable of sucking the oil up into the shape of a rope that winds itself around them. It increases the drag on the engine and whips up the oil. The only time I'm close to the full level on a big race pan is for the 1st fire & break-in splash. On my race motor, there's never more than 6 QT in its 10QT pan, even with my windage tray.

Re: Does too much oil slow a car down? [Re: B3422W5] #373976 07/13/09 11:34 PM 07/13/09 11:34 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I always run 1 qt down on a big pan

Re: Does too much oil slow a car down? [Re: MR_P_BODY] #373977 07/13/09 11:54 PM 07/13/09 11:54 PM
Joined: May 2007 Posts: 108 st.charles,mo. D dodgem1 member
dodgem1 member D Joined: May 2007 Posts: 108 st.charles,mo.	yes ,take a run down the beach,then run down the beach in about a foot of water,i bet you run faster out od the water,same thing

Re: Does too much oil slow a car down? [Re: dodgem1] #373978 07/14/09 12:10 AM 07/14/09 12:10 AM
A Anonymous Unregistered
Anonymous Unregistered A	It seems to me there should be harsher implications of too high oil level. What if the oil foams more, this could potentially cause pressure loss due to aeriation/ foaming

Re: Does too much oil slow a car down? #373979 07/14/09 08:24 AM 07/14/09 08:24 AM
Joined: Jan 2003 Posts: 9,997 Frostbitefalls MN (Rocky&Bullw... gregsdart master
gregsdart master Joined: Jan 2003 Posts: 9,997 Frostbitefalls MN (Rocky&Bullw...	A lot depends on rpm, how much is being pushed through the motor, pan depth, type, etc. EVERY situation is different. For your purpose, get a good gauge, and set it up to be very responsive. Some are dampened by using a small hole at the gauge. Then watch what your system does under all conditions. Adjust accordingly.I ruined a lot of bearings till i figured out that the oil pressure "dip" in the traps was a lot worse than the gauge was telling me. An Accusump system can help you if you are going for the least oil in the pan, but can be overkill for most. In my case it is mandatory due to braking forces. 8..603 156 mph best, 2905 lbs 549, indy 572-13, alky

Re: Does too much oil slow a car down? [Re: gregsdart] #373980 07/14/09 11:57 AM 07/14/09 11:57 AM
Joined: Aug 2005 Posts: 47 S Dak S sc5141 member
sc5141 member S Joined: Aug 2005 Posts: 47 S Dak	I have seen cases when oil gets trapped in the upper part of the motor and have an oil psi drop because there is no oil in the pan. Each motor is a little differant

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