Recent Topics
$5 INSTANT coupon off 5qt PP and PUP
by Texan4Life
15 minutes 17 seconds ago
2004 Saturn L300 V6
by 901Memphis
Today at 01:33 PM
Been emailing back and forth with Royal purple
by Foreignjunky
Today at 01:29 PM
Turn compressor pressure switch down?
by sciphi
Today at 10:33 AM
2008 Mecury Milan AWD (V6), 1st time oil change
by MrNobody
Today at 10:15 AM
ATV GEAR OIL
by OtisBlkR1
Today at 09:24 AM
Six top FIFA officials arrested for corruption
by gfh77665
Today at 08:55 AM
Want an 899 panigale so bad!
by donnyj08
Today at 08:37 AM
Regular Pennzoil...and sludge?
by mrdctaylor
Today at 08:33 AM
Full Synthetic or Synthetic Blend ???
by fins
Today at 08:16 AM
Will Ester based Pennzoil syn TCW3 attract water?
by SOHCman
Today at 07:45 AM
Motorcraft 5w30 semi synthetic replacement
by bluegillz
Today at 07:38 AM
Newest Members
LRs281, David45, bluegillz, MIDO, RLenox
54123 Registered Users
Who's Online
104 registered (Astro14, 901Memphis, b1amgm47, 97K15004WD, ARB1977, 7 invisible), 2048 Guests and 141 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
54123 Members
66 Forums
231931 Topics
3717900 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#2689395 - 07/20/12 12:00 AM Re- using oil from a race car
Hendo Offline


Registered: 01/10/12
Posts: 30
Loc: Australia
Hi All

Here's the question. At Uni, we build a car for a competition called FSAE. Pretty much design and build a car from scratch to race against other Unis. We run a R6 motorbike engine and use moto specific oils and have tried 5w30 (motul 300v), 10w40 and 20w60 oils to do get data for the car (we're having surge problems)

Each fill (4l, custom dry sump) is in there for less than 5 hours. I have filtered and kept the used oil, and I'm after people's opinion on using the oil again in road cars (mostly beaters)

How badly does racing affect the oil? I'd guess it has sheared a little and discolored due to high temp, it just seems a shame to waste double ester oil after 5 hours use! what's the consensus?

Top
#2689396 - 07/20/12 12:04 AM Re: Re- using oil from a race car [Re: Hendo]
tommygunn Offline


Registered: 01/27/11
Posts: 3061
Loc: usa
Depends on the kinda racing really.

I dunno. For beaters? Fine. But its impossible to know what kinda fuel dilution the oil may have suffered.
_________________________
i am a [censored] who hides behind bugmenot.
i also like applying negative pressure to a certain male appendage.

Top
#2689397 - 07/20/12 12:05 AM Re: Re- using oil from a race car [Re: Hendo]
dave1251 Offline


Registered: 07/15/05
Posts: 7596
Loc: Maricopa, AZ
Without a analyst my biggest concern would be fuel dilution. But if we are talking oil for a beater I would not worry about it too much especially if you are not attempting extended OCI's. I am telling what I would do in this situation. But I do a lot of things I do not recommend others to attempt.
_________________________
make the inside of your engine oil cap white.
don't use.

Top
#2689404 - 07/20/12 12:18 AM Re: Re- using oil from a race car [Re: Hendo]
Hendo Offline


Registered: 01/10/12
Posts: 30
Loc: Australia
As far as fuel dilution goes, we run the engine leaner than factory (minimum 13:1 a/f ratio) because part of the competition scoring is fuel efficiency. I'm guessing this means fuel dilution is less of a problem...

The racing we do is autocross, laps around a kart track with heaps of cones. Each run is short, <20mins


Edited by Hendo (07/20/12 12:20 AM)

Top
#2689406 - 07/20/12 12:20 AM Re: Re- using oil from a race car [Re: Hendo]
jjcom Offline


Registered: 09/19/11
Posts: 181
Loc: Illinois
If you're not running them real rich, or running them extremely hot for a long time, more than likely I'd say the oil still is "ok". I wouldn't throw it in a good car, but if it's one thats drinking oil like it's water, then I'd say you're fine.
_________________________
2014 Chrysler 200 2.4
2007 Grand Prix 3.8 179,000 Mobil 1 EP 5w30
1930 Ford Model A Stock Rotella 15W40

Top
#2689407 - 07/20/12 12:21 AM Re: Re- using oil from a race car [Re: Hendo]
Kuato Offline


Registered: 10/23/05
Posts: 3691
Loc: US...on the road again
Why not have a UOA done on the used oil? Then you will know for sure.
_________________________
“Wise men fear... the anger of a gentle man.” ~ Patrick Rothfuss


AMSOIL

Top
#2689546 - 07/20/12 08:58 AM Re: Re- using oil from a race car [Re: Hendo]
gfh77665 Offline


Registered: 09/01/08
Posts: 2685
Loc: Southeast Texas
5 hours on the oil? Are you kidding? I would run that in a NEW car in a heartbeat! I don't think there would be any fuel dilution, but even if there was it would quickly burn off in normal highway driving. Thats good oil, just 5 hours old!

Top
#2689838 - 07/20/12 02:06 PM Re: Re- using oil from a race car [Re: Hendo]
mechtech2 Offline


Registered: 09/05/06
Posts: 19479
Loc: Chicago Area
For a beater? Use that oil!
Thank you for recycling, too!

Top
#2689946 - 07/20/12 03:49 PM Re: Re- using oil from a race car [Re: Hendo]
TFB1 Offline


Registered: 09/03/10
Posts: 2622
Loc: VA
In a passenger car engine that has no real issues, any residual fuel should be evaporated in a couple hours of normal operation...

Top
#2691422 - 07/22/12 02:19 AM Re: Re- using oil from a race car [Re: Hendo]
Hendo Offline


Registered: 01/10/12
Posts: 30
Loc: Australia
Fantastic. Thanks for the advice, I will probably blend it with a HDEO for the beaters- ester + calcium cleaning goodness!

Top
#2691425 - 07/22/12 02:29 AM Re: Re- using oil from a race car [Re: Hendo]
Shannow Offline


Registered: 12/12/02
Posts: 28829
Loc: a prisoner island
I don't think FSAE would beat the oil up too bad.

Which Uni ?

Top
#2691618 - 07/22/12 11:08 AM Re: Re- using oil from a race car [Re: Hendo]
GMorg Offline


Registered: 01/29/06
Posts: 2410
Loc: Mizzou-land
So, you have decided that the oil should not go back into the race engine and it may be OK for your beater. Where do you draw the line?

Also, how do you filter the oil? How large of a particle will make it through your filter?

Top
#2691768 - 07/22/12 02:04 PM Re: Re- using oil from a race car [Re: Hendo]
HTSS_TR Offline


Registered: 04/17/06
Posts: 14598
Loc: Lake Forest, CA
I filtered the used ATF from E430 to use in the LS400 leaking power steering this way:

Stub 5-6 paper towels tightly into the long ATF funnel, place the funnel into 5-qt jug then pour ATF into the funnel. The ATF is filtered at the rate of less than 1/4 pint per hour. For 4 quarts it took more than a day.
_________________________
'94 Lexus LS400
'00 MB E430
'04 Honda S2000
'06 Volvo V70
"Throwing food away is like stealing it from the poor and hungry" Pope Francis

Top
#2691777 - 07/22/12 02:16 PM Re: Re- using oil from a race car [Re: HTSS_TR]
Highline9 Offline


Registered: 08/24/11
Posts: 512
Loc: ca.
Originally Posted By: HTSS_TR
I filtered the used ATF from E430 to use in the LS400 leaking power steering this way:

Stub 5-6 paper towels tightly into the long ATF funnel, place the funnel into 5-qt jug then pour ATF into the funnel. The ATF is filtered at the rate of less than 1/4 pint per hour. For 4 quarts it took more than a day.


wow a real redneck filter, I would do the same.
_________________________
2010 challenger R\T
2014 mercedes glk350
2003 hyundai elantra
1992 dodge w250 cummins

Top
#2691793 - 07/22/12 02:48 PM Re: Re- using oil from a race car [Re: Highline9]
HTSS_TR Offline


Registered: 04/17/06
Posts: 14598
Loc: Lake Forest, CA
Low cost (5-6 paper towels) with good filter, what not to like ? grin2
_________________________
'94 Lexus LS400
'00 MB E430
'04 Honda S2000
'06 Volvo V70
"Throwing food away is like stealing it from the poor and hungry" Pope Francis

Top
Page 1 of 2 1 2 >