'SAE' is an acronym for: "Society of Automotive Engineers" An international non-profit educational and scientific organization dedicated to advancing mobility technology.
They develop technical information on all forms of self-propelled vehicles including aircraft and disseminate this information through many channels, including oil specifications.
The number "90" is the viscosity (or thickness). 90 being a very viscous or thick "weight" oil. (90 weight would obviously be for special applications.)
"Straight" (or single), means that the viscosity is rated at a single non-winter temperature viscosity. Usually, the weight will include a "W" for "Winter" (as in 10W-30), rating that viscosity at 0 (zero) º degrees F.
And of course "mineral" is just that.... mineral oil ... Petroleum distillate.
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20W-50 is equal to Sae 90 W.
SAE 90 straight mineral oil is a type of lubricating oil that has a viscosity grade of 90, meaning it has a medium-thick consistency. It is derived from crude oil and has no additives, making it suitable for simple applications where a basic lubricant is needed without extra performance enhancements.
Manual says to use SAE 75w-90 or SAE 80w-90 gear oil
SAE 90
The fire point of SAE 90 oil is typically around 280°C (536°F), which is the temperature at which the oil will sustain combustion. The flash point of SAE 90 oil is approximately 250°C (482°F), which is the temperature at which the oil will produce enough vapor to ignite momentarily in the presence of an ignition source.
Yes, you can use 75w-90 gear oil instead of SAE 90 gear oil
sae 90 gear oil. it is 100% mineral oil. napa, car quest, call your local massey dealer they have it. you will pay a little more but they have all the answers.
sae 90
SAE 90 oil is equivalent to an ISO viscosity grade of approximately 220. It is commonly used in applications requiring a heavier gear oil, such as in automotive differentials and manual transmissions. Additionally, SAE 90 oil can be compared to certain grades of 85W-140 oil, though the latter may have different performance characteristics due to its broader temperature range. Always consult manufacturer specifications for optimal performance.
Sae 75w/90
SAE 80 or SAE 80w-90 below 50 f SAE 90 or SAE 80w-90 0 to 90 f SAE 140 above 50 f consistently
Sae 80w-90 gl-5