oil temp vs water temp

[saltshaker]

I notice a differenc between the two...105c for oil and 85c for water while driving on the hwy @3000 rpm....the difference holds in traffic, although this week the water temp was hight with the heat here on the east coast....
428 motor w/iron heads...whats ur oil temp, i don't have a oil cooler
Jon

[dcdoug]

I have a 427, iron with iron heads and typically run 85-95c water and 80-90c oil. Usually oil is about 5c lower than water. I am running an oil cooler though.

[Excaliber]

My oil temp is consistently lower than my water temp, in general. On occasion they are the same, but not often. When I'm running hard at the track the oil temp get's up to around 100 c. and the water temp stays around 90 c.

Normal cruising, water temp hangs around 85-90 c with oil temp less than that. Around town water temp goes up as does oil temp, but not high enough on either side to worry about.

427, iron heads.

I'm not sure I would want an oil cooler, maybe,,, but I've never seen the oil temp get high enough to worry about it. Mostly, I'm happy IF I can get the oil temp UP to equal the water temp. That never happens on a coolish day, only a good warm to hot day.

OH, I'm running about 10 qts of oil, by the way, I think the amount of oil and the location of the temp sensor makes a difference in the reading. My temp sensor is in the front of the pan. I can actually see the temp fluctuate 5 degrees or so, VERY QUICKLY, depending on if I'm accellerating hard, or stopping or moving the oil around in some way. It's like there are pockets of cooler or hotter oil here and there that get moved around and the temp sensor reacts to that real quick? Weird...

Baffled road race pan, my oil pressure never drops even in tight high speed long corners, go figure.

[elmariachi]

Ernie my #s are exactly like yours, iron heads, Armando pan, sensor in front, no oil cooler. I see that same fluctuation from time to time but I don't think its any big deal. I too have been reluctant to add an oil cooler because I think its about right like it is.

[Excaliber]

Yeah, whats up with that fluctuation??

It's never bothered me, but it is a bit of a head scratcher how that can be.

[JBCOBRA]

I am pretty sure the oil should be hotter than the water.
Oil works best above 212f

[JBCOBRA]

If your oil temps never get up to or way beyond 212f you guys are not beating the car hard enough Anything less than 265f is A OK

[Excaliber]

From what I've heard, or as I like to say, "rumor has it" engine oil should not exceed 212, the classic boiling point. Some say it should be considered the same way as auto trans fluid. Which is generally recognized as a max of 200 F to be on the safe side. Note that virtually all auto trans utilize an oiler cooler of some kind.

[JBCOBRA]

THAT is absolute and uter BS

[JBCOBRA]

Firstly, you can't even get the moisture out of the oil until you hit 212............

[Excaliber]

Of course you can, you don't have to reach boiling point for moisture to begin to separate itself from another chemical body, oil in this case. Simply raising the temp of the oil to a reasonable level AND given enough time (typically 20 to 30 minutes) the water will turn to vapor and begin to separate and purge itself.

BUT, the oil temp reading is an AVERAGE reading of the sump temperature. All the oil that comes in contact with the combustion chamber area of the heads is WAY hotter than the average sump temp. That "super hot" oil is what carries away the heat and helps cool the engine and stabilize the average sump oil temp.

I could actually cite a couple of places on the net that speak of the ideal working oil temp, but I won't bother. Try the Google, I hear it is excellent served with crow for this evening's dining experience.

[JBCOBRA]

Whatever Ernie
I respect you. But the fact that oil should be hotter than oil is common knowledge.
If you guys are not getting your oil hotter than the water..........then drive your car.

[JBCOBRA]

Originally Posted by JBCOBRA

Whatever Ernie
I respect you. But the fact that oil should be hotter than water is common knowledge.
If you guys are not getting your oil hotter than the water..........then drive your car.

Thats it and that all

[JBCOBRA]

with synthetics you car run them up to 300ish

[JBCOBRA]

I am not sure why we get this oil temp thread so frequently?
Run the hell out of your cars, chances are they will still outlive all of us.

[patrickt]

You don't need to get your oil up to 212... not by a long shot. There's a thousand well written oil articles on the web if you just google "optimum motor oil temperature." Almost invariably, the articles will specify 185-210 as the optimum temperature, with a temperature at or below 200 preferred for prolonged engine life -- don't take my word for it, check it out for yourself. This is a typical example: http://www.elephantracing.com/techto...emperature.htm

[JBCOBRA]

I was just waiting for your @ss to show up!
You are perhaps the biggest A Hole to ever grace this website.
Get in your baby**** brown, padded rollbar ERAhole, putt around the neighborhood and shut the **** up!

[patrickt]

Originally Posted by JBCOBRA

I was just waiting for your @ss to show up!
You are perhaps the biggest A Hole to ever grace this website.
Get in your baby**** brown, padded rollbar ERAhole, putt around the neighborhood and shut the **** up!

You write very well.

[Excaliber]

The last time, recently, I managed to get my oil temp to a 100 C was on a very twisty uphill mountain road in third gear for about 15-20 miles, constantly on and off the throttle and braking hard into the corners. Following a sport bike who for some reason kept dragging his knee in the corners... The weather was in the 90's, there was noticable wheel spin on occasion, the scenery was spectacular (or so I'm told, I was a little to busy to notice).

Disclaimer:
Of course I strictly adhered to all posted speed limits at all times and would never zoom up a twisty canyon road chasing a motorcycle. In other breaking news, I have a bridge for sale...

[JBCOBRA]

Because you know every word is true Bizoh