Recent Topics
Bike for a very short rider
by Jarlaxle
02/28/15 06:26 AM
'Best' cleaning oils and OCi question
by wemay
02/28/15 06:06 AM
Volume correction at the gas pumps
by Patman
02/28/15 05:42 AM
ad blue....Not a diesel additive...but Jeez !!!
by Shannow
02/28/15 04:49 AM
Motorcraft 820-s Oil Filter Failures? Fram Ultra?
by crazyoildude
02/27/15 11:10 PM
gumout octane booster
by Marco620
02/27/15 11:03 PM
So Many Bearing Tests Trying To Prove Best Oil ?
by JSRT4
02/27/15 10:40 PM
VIDEO: GM 3.8 running through oil fill hole...
by gregk24
02/27/15 10:29 PM
1999 Silverado 5.3L oil contaminants
by Georgiey22
02/27/15 10:03 PM
M1 0w40's equal in other weights
by Toy4x4
02/27/15 09:54 PM
Aluminum vs Copper heater cores
by 007
02/27/15 09:48 PM
Noisy lifter in 02 Montero?
by spk2000
02/27/15 09:08 PM
Newest Members
huskersnake, DiamondCC, savannahz, Kenyan, quest12
52977 Registered Users
Who's Online
81 registered (901Memphis, 1foxracing, asand1, 46Harry, 18B, 12 invisible), 1180 Guests and 191 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52977 Members
66 Forums
227308 Topics
3625406 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: 2984
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.

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: 7474
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: 3448
Loc: Houston TX for the moment
Why not have a UOA done on the used oil? Then you will know for sure.
_________________________
Amsoil

04 Jeep Wrangler 2.4 MT 186k
13 F150 5.0 4x4 29k - STOLEN!


There are many idiots in the world. Sometimes I am one of them.

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: 2547
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: 28013
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: 2405
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: 13750
Loc: Irvine, 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 LS400
'00 E430
'04 S2000
"Consumerism has accustomed us to waste. But throwing food away is like stealing it from the poor and hungry" Pop 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: 503
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: 13750
Loc: Irvine, CA
Low cost (5-6 paper towels) with good filter, what not to like ? grin2
_________________________
'94 LS400
'00 E430
'04 S2000
"Consumerism has accustomed us to waste. But throwing food away is like stealing it from the poor and hungry" Pop Francis

Top
Page 1 of 2 1 2 >