how do i know when i need to cook my oil

[hotrodharley]

have done few start ups and couple passes on my car and been riching up my eng;;so thought should drain oil befor go to track again and check oil for alcohol;;new to this so how do i know if need to cook my oil or not?i drained yesterday and today i looked at it and still has the brad penn green color to it and doesn't look as anything floating on top..

[Curly1]

I never cook the oil. I have always just made sure at the end of race day to get water temp up over 210* and the water steams right out.  Now I am running a vacuum pump and it helps some but very important heat up motor good at end of day and you are good. I also believe some people change the oil way more often than needed.

[KeithDyer]

I am kind of like Curly, think folks change oil pretty often when they may not need to.

My truck and tractor guys used to leave in if forever and until I got them to use STP or Lucas, the iron parts in the motor would rust up.  Never any damage from leaving it in a bit longer that I could see.

If the oil has the milky look to it, get the temp up for a bit and cook the moisture out of it while it in the motor!!

Take care, K

[wideopen231]

I am the guilty guy here. I change oil lots ooner than needs. IMO motor cost too much to worry about few bucks spent on good clean oil to protect my investment.

[GlennLever]

I am the guilty guy here. I change oil lots ooner than needs. IMO motor cost too much to worry about few bucks spent on good clean oil to protect my investment.

I'm with you on this one.

[masracingtd1167]

x3

[dreracecar]

New trucks are xxxx expensive and hauling race cars in big trailers up and down steep grades put extreem heat and load on the engine oil. show of hands on how many of you stop every 5 miles to change oil

[GlennLever]

New trucks are xxxx expensive and hauling race cars in big trailers up and down steep grades put extreem heat and load on the engine oil. show of hands on how many of you stop every 5 miles to change oil

Every 5,000 oil reaches operating temperature and is held there a long time.

[ricardo1967]

New trucks are xxxx expensive and hauling race cars in big trailers up and down steep grades put extreem heat and load on the engine oil. show of hands on how many of you stop every 5 miles to change oil

Bruce, not quite apple-to-apple comparison.

In other hand.... oil drain interval for commercial diesel engines start at 20,000mi (severe use). Some are factory spec'd at 70,000mi, some aiming even higher.

[gregm784]

I'll go 10k on my vw tdi (diesel) oil. My Valvoline has been in the dragster all year. 

[masracingtd1167]

New trucks are xxxx expensive and hauling race cars in big trailers up and down steep grades put extreem heat and load on the engine oil. show of hands on how many of you stop every 5 miles to change oil

      The motor in my truck dose not see 9400 rpm too often !!!!

[wideopen231]

Crank in my truck is not 3000 bucks.My truck does not make 1000 hp.My truck is not a race engine built to get as close as possible to edge w/o stepping over. My race car is not built to run 55 mph either.

  If you want to run oil for one season or  500 pass' thats fine.Im not paying for your engine.I am paying for mine and I will change oli very frequent.

[Solid Rock]

I drain the oil every 3rd or 4th race and it's just getting milkier than I'd like.  If you let the oil sit in a clear jug until your next change, the water settles out and you can re-use about 3/4 of it before you start putting water back into the engine.  I like Valvoline Racing 20w-50.  With 8 qt pan, that means I'm adding 2 quarts each change.  $16 oil change is pretty cheap insurance. 
Motor is 477 BBC with Ron's toilet on Methanol.  I don't have any luck getting the temp over 200.  Warming up on gas helps me get to 4 races instead of 3. 

[wideopen231]

Solid rock. If you can not engine over 200 especailly with shut  off half shut then you are more than likely rich at idle or entire system. Just my experiance anyway.

[wideopen231]

You are 100% corret about oil and water seperating.I have a jug that has spout in bottom for draining off water. Drain  most of it.Let it sit.2 days or so later drain again till get solid oil. I then keep run off and fill jug. Later I do  same when jug filled with run off. Use that oil in chain saw.