Hi guys,
I've recently got my hands on an oil temp gauge. Here wondering what is the safe operating temp for the engine oil?
What is the minimum temp where the oil starts working properly?
What is the maximum temp where the oil begin to turn harmful for the engine?
Using Carlube Triple R fully synthetic oil on a motor that revs till 8.7k rpm, anyone with experience?
Safe oil temp range?
Started by
taikyu
, Mar 30 2006 11:35
3 replies to this topic
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#2
crono33
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- 346 posts
- Joined: July 02
Member
Posted 30 March 2006 - 19:24
on my rotax 912S equipped airplane, operating manual specifies a min temp of 50C before applying max power, which is delivered at 5800rpm
these engines have demonstrated extremely high reliability and durability when used according to instructions
gm
these engines have demonstrated extremely high reliability and durability when used according to instructions
gm
#3
Stian1979
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- 420 posts
- Joined: February 06
Member
Posted 31 March 2006 - 15:26
Oils temperature indicate how warm the engine is, when oil get up to a certain temperature it show that the engine components are heated up and can be put under full load.
Oil temperature don't mather that mutch, but for high temperatures the oil will loose it's viscosety and the hydrodynamical oilfilm may brake.
What is carlube?
I stick with castrol or mobil oil's
The codes on the botle is easy to read and find out what class the oil has.
Many of this oils with strange names has no other mark on the botle than the brand and 10-40 witch actualy say nothing.
Oil temperature don't mather that mutch, but for high temperatures the oil will loose it's viscosety and the hydrodynamical oilfilm may brake.
What is carlube?
I stick with castrol or mobil oil's
The codes on the botle is easy to read and find out what class the oil has.
Many of this oils with strange names has no other mark on the botle than the brand and 10-40 witch actualy say nothing.
#4
J. Edlund
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- 1,323 posts
- Joined: September 03
Member
Posted 01 April 2006 - 23:41
Around 70 degC is typically mentioned to be the lowest oil temperature where it's safe to use higher loads/speeds.
A motor oil should on a regular basis be above 100 degC as this allows water to boil off.
A good oil can withstand temperatures of about 200 degC, general oil temp should however be much lower. Cool the oil so that it maintains a temperature of 110 degC or so. High temperatures result in thermal breakdown and oxidization of the oil.
Oils decrease in viscosity at higher temperatures, with a high speed engine the lack of viscosity isn't usually much of a problem. However, high shear situations can also decrease viscosity. Oils with higher viscosity indexes decrease less in viscosity when temperatures increase.
Oils suitable for racing use should contain larger amounts of anti wear addetives. This may in some cases result in that the oil doesn't have the typical classification (like API).
A motor oil should on a regular basis be above 100 degC as this allows water to boil off.
A good oil can withstand temperatures of about 200 degC, general oil temp should however be much lower. Cool the oil so that it maintains a temperature of 110 degC or so. High temperatures result in thermal breakdown and oxidization of the oil.
Oils decrease in viscosity at higher temperatures, with a high speed engine the lack of viscosity isn't usually much of a problem. However, high shear situations can also decrease viscosity. Oils with higher viscosity indexes decrease less in viscosity when temperatures increase.
Oils suitable for racing use should contain larger amounts of anti wear addetives. This may in some cases result in that the oil doesn't have the typical classification (like API).
