So what's everyone's take on this subject, is it safe to do and at what temp works the best if so. Was going to try it on some older equipment I have and need to know what temp to use and for how long.

I'm not an expert, but I would say don't do it.  I don't think that oven thermostats are very reliable and ovens (kitchen ovens) don't heat evenly or maintain constant temperatures from what I remember reading (here and on oven sites).   Now, ovens that are made for bowling balls are supposed to have calibrated thermostats and even heating so those are used.


Edited to add:

I think that kitchen ovens because of their size, have areas that are much hotter than where the thermostat is located and they are designed to heat way above the setting and then cool down before heating back up again, so you will never know exactly what the temperature is at any given area of the oven.

Agree most wholeheartedly with all of the above,
PLUS
it is far too dangerous with the dripping of the oil and the real potential danger of the oil catching fire. That has happened.
PLUS if your wife or girl friend or partner learn of this, ouch!

I agree,dish washer is much easier, use setting for glasses or dishes dont use soap.
(The soap can remove colour in logo)
Not on Motiv balls 

Kitchen Aid dishwasher set to Hi-heat..Works like a charm..I used a dishwashing tablet in there just as if washing dishes. Put a Hyper Cell and a Black Widow Legend in the bottom rack, turned the holes down. Let it go thru the entire cycle. The Cell really looked like a totally different ball. ball reaction is like new.

See what the Hi-Heat setting does in your manual.
If it does what I think it does, heat the water beyond what the temperature at which it arrives from your house water heater, that is a very bad idea. That temperature can get up to 180 - 200 degrees. The maximum temperature to which you should expose a ball is 125 - 140 degrees. Above that, in theory,  the plasticizer, the chemical that helps urethane become resin, is extracted. Do that enough and you wind up with a urethane ball.

Heck, in many cases, the house water heater is set to 160 degrees which by itself is way too hot for a bowling ball. Both Storm and Brunswick, on every ball box, say specifically that subjecting a ball to more than 125 degrees voids the warranty.

What cc said. Get a thermometer from Walmart for $15 and test your home oven. Most have a keep warm feature that gives you lower temps then the cooking feature.

Stay below 120 to 150 max.  Or build your own set-up for under $100

I agree with Charlest and MI 2 AZ against using the oven for oil extraction. Motiv's standard warranty advises against exposing their bowling balls to a temperature beyond 125 degrees---probably a bit conservative. I am not sure of the warranty of other manufacturers.

My Nu Ball unit has a temperature gauge with a maximum of 145 degrees. I have never gone that high. I set the unit at 125 degrees for 60-90 minutes on the Sigma Sting which seems to work OK. I have a couple of Hammer and Columbia balls which I go up to 135 degrees for the same length of time---has been OK so far.

I had a customer put his ball in the oven a couple years ago.  It spider webbed around the whole ball and he almost burned his house down after forgetting it was in there.  His solution was to super glue the entire ball to "fill in" the cracks.  Never the less the ball was garbage after that.

Do yourself a favor and go to a pro shop that has a rejuvenator oven and have it done properly. 

Sounds like a lot of mixed feelings on this subject, might try the dishwasher first but I have a feeling you might get more oil extracted with dry heat by an oven.

NO MIXED FEELINGS AT ALL. DO NOT USE THE HOUSE COOKING OVEN FOR BOWLING BALLS!!!!
(Yes, I am screaming.)