What temp do you wait for until you push? Am I being conservative or foolish with my arbitrary limits? Tags: None. For every pound of fuel burned in an engine, the combustion process also generates a pound of water! If engine sump temperatures rarely exceed degrees water's boiling point , the water will mix with sulfur another combustion by-product and create acids that can eventually damage bearings.
As for ultimate power potential, the general consensus among most racers is that hot oil and cool water make more power in most engines. Cold engine oil causes excessive frictional drag on the bearings and cylinder walls.
A quality conventional motor oil will tolerate oil sump temperatures of up to degrees, but starts breaking down over degrees. The traditional approach is to try to hold oil temperatures between and degrees. Even on a short-duration, drag-only combo where oil is frequently changed, I would not want to routinely see underdegree oil temps.
A full-synthetic oil will withstand sump temperatures in excess of degrees, and for hard-core professional racing, some oval-track race teams are experimenting with ultra-thin, specially formulated, race-only synthetics operating at degrees or even higher.
Also remember that a high-end engine is built as a total combination. Piston-to-wall clearances, piston ring end-gaps, and bearing clearances are specifically tailored to match the engine oil's characteristics and intended operating temperature. Comment Post Cancel. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Standardised engine oil temperature range?
Ask Question. Asked 4 years, 8 months ago. Active 6 months ago. Viewed k times. Thanks for your time, Dan. Improve this question. Above this temperature, we would recommend increasing the hot temperature weight to ensure sufficient oil pressure.
How can we get rid of this heat? There are two ways to reduce the heat that is transferred into the oil. Both of these systems can be implemented incorrectly and work poorly, both of these systems can be implemented correctly and work great. Individual applications tend to favor a certain method over the other but ultimately that decision should be an end user choice as each person has his or her own goals, objectives, and ideals.
Both can and will work great when properly executed. These are the units you see on the front of cars and are generally square in shape and not that large. These use ambient air to cool the engine oil which flows through small tubes with internal turbulators , working very similar to radiators but with increased cooling directed at the slower flowing, high-pressure oil. These units are easy to implement across a wide range of applications as they only require application-specific bracketry and lines.
Overall, they are generally quite effective but have some pitfalls. The units are small enough to be placed in various places throughout the cooling stack, be it in front of the radiator, behind the radiator, or in front of the front wheels.
Below are listed some positives and negatives for this type of cooler. Extremely simple design and operating principle. Easy to implement on a wide range of applications.
Costs are generally reasonable. Large delta T change in temperature for increased heat rejection. Wide range of possible locations for mounting. This way, your engine will run more efficiently and live much longer. Pennzoil Platinum Motor oil for hot weather. Mobil 1 Motor Oil for hot weather. Valvoline Advanced Car oil. Valvoline 10W Synthetic Motor Oil. Castrol Motor oil for hot weather. Castrol Motor Oil for hot weather. Thermal breakdown is among the most damaging effects, and occurs when a car's internal heat causes a chemical reaction in the motor oil , which causes the oil's viscosity to change.
Basically, if or more accurately, when the engine heats up beyond a certain temperature threshold, the motor oil will start to degrade. The average car is equipped with an oil pressure gauge that indicates how much pressure is being used to transport this oil. Ideally, oil pressure should be between 25 to 65 psi when the oil is warm. A reading of 80 psi or higher means that there is a serious issue that needs to be resolved.
If you really are asking " Will an oil cooler really lower engine temp ", then the answer is no. Cooling the oil does not cool the engine the engine is cooled depending on cooling system. Synthetics can safely handle higher operating temperatures without oxidizing burning or breaking down. The upper limit for most mineral-based oils is about to degrees F. Synthetics can take up to degrees F. There are a few things that can cause the oil temperature sensor to fail, one of them is wiring damage.
Over time, if the wires become worn or are shorted out, the sensor will fail and will need to be replaced along with the wiring. In addition, corrosion can cause oil temperature sensor to fail or read incorrectly.
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