Engine oil cooler... what are the benefits??

[MMamdouh]

will it be any good for a N/A 1.5 SOHC lanos?? from where can i get one?


MMamdouh

[kinkyllama]

I wouldnt think it be really benificial unless its really hot where you live.

I'd get it from ebay if you can find someone to ship to you

[BosnianLanos]

Considering that heat is one of the main killers of engines, any cooling of the oil would be beneficial. It is good for piece of mind and could in the long run help the life of engines. However, if the oil cooler is too big, it could get too cold and your engine could never properly heat up, hurting mileage and performance.

[Audacity Racing]

in egypt... i don't think you'd have a problem with oil temp being too cold




in the usa you can pick them up at local auto shops for pretty cheap. they are more like a mini radiator though, not a long skinny thing like the pic. you can get those, but more often than not, they look like mini radiators (same thing as a tranny cooler really)

[DomWoo]

i got one from summit racing

the one in the picture looks like its for a big truck, mines like 8 rows tall and only 6" wide

[MMamdouh]

so the coolers can be used on N/A cars as well... i was under the impression that you only need those in a turboed car as the turbo heats up the oil.

in Egypt it can be of a good use in summer... ambient temp. can go up to 42C to 45C some days and maybe even more so driving with a cooler on board is a plus... not sure if it will make problems at winter or not... it only gets doen to some 15C or 12C in early mornings of a very cold day.

MMamdouh

[Efratech]

The XE uses an oilcooler, the 4age 16v uses one also, and others NA engines.

[karim]

The cheapest company is Hayden and they are great have bought about 3 from them, and no problem. I have ATF cooler in my City, and would like to add oil cooler too. The weather back here in summer gets very hot, and the way we drive the oil will be cooking.

karim

[dhd]

There is one benefits from the oil cooler
It is cools the oil coz
Hot oil = bad Lubrication
So the oil cooler will cool the oil to have good
Lubrication.





DHD

[genie47]

Not necessary where you live and I know it is hot like where I live.

There is a strange relationship between engine oil temperature, coolant temperature and ambient temperature.

Check this thread out in BITOG and the discussions that follow:

http://theoildrop.server101.com/ubb/ult ... 4;t=000196

I quote Molakule:

Tech Brief:
Bulk Oil Temperatures in the Sump verses Coolant Temperatures; A summary.
By Molecule

Many times the heat transferred to the lubrication system from combustion, and the kinetic components of an engine, are overlooked until a problem arises during dynamometer or track testing.

A study* was undertaken to develop a heat flow and heat transfer model of an engine's lubrication system to predict primarily sump oil temperatures, and secondarily, coolant temperatures. The temperature relationships between the oil and coolant were found to be most interesting. This technical brief is a summary of the referenced paper.

A model was developed to account for numerous items in the engine /lubrication system:
1, Engine Speed and Load,
2. Head and Block Geometry
3. Bearing clearances
4. piston design
5. coolant and ambient temperatures
6. material properties.

If the engine had an oil squirter system, this was included as well.

Energy balance equations and heat input sources were incorporated into the
Model, with heat sources and heat sinks within the engine accounted for.

To verify the model, the model was plotted against full-up V8 engine data from a dynamometer. The model correlated quite well with the dynamometer data, with a slight under-estimation of oil sump temperature at high rpm.

It was found that the piston undercrown contributed about 70 to 80% of the heat into the oil with bearings contributing 10 to 20% of the heat energy to the oil.

Here is a breakdown of heat sources for 2,000 RPM WOT:
Energy to Oil from Piston Undercrown - 76%
Main and Big End Bearings - 13%
Camshaft Bearings - 1%
Energy to oil from Cylinder Wall - 0%
Oil Deck in Head - 2%
Oil Pump Energy - 8%

At 4,000 RPM WOT, the only increase in heat energy came from
the Main and Big End bearings at 19%, a 6% increase from 2,000 RPM WOT. The Piston
Undercrown's energy contribution to oil temp was 4% less at 72% for the 4,000 RPM WOT case.

The predicted sump (bulk) oil temperature versus the coolant temperature
was shown to be about 18 to 20 degrees C higher for the oil than for the coolant at 2,000 RPM WOT. At 4,000 RPM WOT, the oil sump temperature was about 50 degrees C higher than the coolant temperature. The slope for both RPM ranges was about 0.7 C/C, which means that on the average, the Oil Sump temperature is always 1.2 to 1.43 times higher than the coolant temp.

An interesting side-bar of the study was that the bulk oil temperature increased "only" 0.3 C for every 1.0 C increase in ambient (oustside) temperatures.

? Zoz, Steve, et. al., Engine Lubrication Model for Sump Oil Temperature Prediction
SAE Paper 2001-01-1073.

If you go over and follow the discussions, very unlikely a cooler is needed in a street car. There are potential problems like leaks. The more complicated the system is the more potential you have for problems. Just apply Occam's Razor.

As for the opinion that hot oil is bad for lubrication, it is hogwash. Motor oil lives for that kind of condition unless it is really made for obsolete specs. Many motor oils today are way better than the best 10yrs ago. The problem with the oil of old is that they get cooked to sludge at high temperatures. Choose an oil of narrow viscosity range (less viscosity index improvers). 5W20, 10W30 and 15W40 oil both dino and synthetic are narrow range oils. They are almost like monograde oils with high temperature-high shear of 3.3cP and above. I would suggest 10W30 for a blend of economy and protection. 15W40 if you absolutely need it.