vandeano

I have my oil temp sender mounted to the side of my oil pan. Is this the correct spot? I read some where that at that location you should'nt go by that temp. It will always read about 50 degrees higher then if the sender was at the oil filter pad. My reading after a 5 mile WOT are just under 300 degrees. Normal cruising it runs about 230. So should I mount my sender where the LOW OIL PRESSURE SENDING unit is?

PatriYacht

I'd leave it where it is. Yes your oil temp is too high.

cstraub

Oil temp should be taken from the pan.

boatman747

Vandeano mine is doing the same thing !!! Exactly

klaw

you should use a infrared and shot the oil filter to see what temps you may actually be getting
Ratek makes a nice one for about $100 very nice tool

Wobble

There has been much discussion on this subject. Oil temp from the pan indicates the max temp the oil sees. IMO this is the way to go. Verify that that is a correct reading as KLAW suggests.

IF so, 300 is too high. A standard cooler reduces temps about 25* before returning it to the engine. Teague's 4" offshore cooler reduces temps by 50*. This is what I now run in combination with M-1 v-twin 20/50 synthetic. My oil peaks around 280* after a hard run in 100* weather with 85*+ river/bay temp.

Do a search on oil temps in this forum and you will have plenty to read.

mopower

I want to know what the hottest spot is reading...that's why mine are in the pan. Filter pad temp looks nicer , but the fact remains it's hotter below.
And yeah , 300* is pushing it . Time for bigger coolers.

RLW

Wobble and everyone,
I assume, from your post, that your 280* temp is taken at the pan.
Is the 50* reduction by the Teague cooler confirmed from actual temp readings after the cooler or was this a claim by Teague?
May I ask what your running for HP and CID, NA or Forced?

The reason I ask is that there has been some recent posts by members who many are seeing 300* oil temp in the pan and/or oil filter pad.

IMHO, the return oil temp from the oil cooler (back to the engine) is as important as the sump temp. Without knowing your Delta T (difference between sump temp and return oil cooler temp), do you really know how well the cooler is performing?
If in fact the Teague cooler does get the temp from 280* (sump) back to 230* (post-cooler) at WOT, under the conditions stated above, those temps seem very acceptable.


I'd like to read some more opinions.

RLW

http://www.dieselpage.com/gieot.htm

jpclear

Yeah; anyone got FACTS to answer RLW? Cause we got way too many "opinions" here. I would like some accurate answers also. But to confuse the issue more; an engine builder, whose opinions I respect, has told me that 300* is over the limit for fossil oil, while a full synthetic will still do the job at 350*. Anyone know for sure what the deal is there? Having asked for facts, now I would like to express an OPINION in the form of a question. If you take the hot oil directly from the pan and raise it's temperature by compressing it with a pump and sending it directly to a filter pad, (assuming we are not going far to get there) wouldn't the temp. taken there be as hot as anyplace in the system short of the load surface itself? --- Jer