Oil Temps?
 

What oil temperature is your boat running? I have been running around 220-230. With hard runs and just cruising. Some say this is too high and others say its fine. I am running 540s with 420 mega blowers.

Re: Oil Temps?
 

I am running the same temps under the same conditions. Mostly cruising with an occasional WO run. I have a NA 540.
In my opinion, those are good temps.

Re: Oil Temps?
 

I agree... those are good numbers. You want your oil to be over the boiling point of water so that you don't get condensation in your oil causing a "milk shake" effect.

Re: Oil Temps?
 

Some people say that is good and others say it is bad. Just trying to find out what is good or bad.

Re: Oil Temps?
 

Cruise temps are about 220, hard extended runs temps rise to 260 (measured before cooler) 468" 671's Superchillers 8 lbs boost. Seems to work real well. Currently have close to 300 trouble free hrs on this set up. Recently switched to Mobil 1 15-50. Just bought M-1 V-Twin for the next change.

Re: Oil Temps?
 

Oil reaches it maximum lubricity at 200 degrees f. Regular old dinosaur oil doesn't start to break down until closer to 300 degrees. Cruising at 220 and peaks of 260 is good. Check the oil on an air cooled motorcycle without an oil cooler.... They reach a scorching 350 and higher. Hot enough to deep fry chicken.. :eek:

Re: Oil Temps?
 

Is there any trick to getting oil temps above 200? Is this dependent on the type of oil used and/or the way you run? It seems difficult for me to achieve those temps.

Re: Oil Temps?
 

Perfect. Your lucky.

Re: Oil Temps?
 

been wondering the same thing myself; temp runs at 200-210 at cruise going up to 250-260 with harder running

Re: Oil Temps?
 

Oil thermostat.

Also, sometimes using a crossover system instead of regular recirculating pump can cause this 'hard to get to proper oil temp' on some applications.

Re: Oil Temps?
 

I asked my engine builder if he was including an oil thermostat. His reply was there was no need for one. I don't know if this is a tough thing to do, or he honestly thought there shouldn't be any problems.

Re: Oil Temps?
 

my temps are 212 cruising, 230 @5500 after a few minutes. temps measured in pan. some guys are using hp500 filter adaptors with a built in thermostat. if you dont want to buy a new cooler with a built in thermo, you can check out hardin marines thermostat. it gets plummed in-line between filter/cooler/block.

Re: Oil Temps?
 

Is this an easy process to complete? About how much money? I can't imagine why anyone would want to build an engine without one? Any ideas?

Re: Oil Temps?
 

These oil temps are excellent. At 300F oil starts to oxidize at a faster rate. Oil life is basicly halfed when run at temps over 300. 200-250 is great. Oil is tested in the lab at 210. On the low side try to get oil temps ovet 180 to remone condensation. Ken

Re: Oil Temps?
 

With your temps in the 220 to 230 range the engine will have several hundred hours of service life. An engine will run with higher temps but as they grow the service life of the engine is reduced.

Re: Oil Temps?
 

Will these oil temps mentioned keep any condensation from gathering around the oil fill? I had this problem with a 572 that I kept for 9 years. Never had any problems with the engine, but had this going on from day one.