Transmission SAE90

[Dstewart73]

The owners manual For my 2007 Xciting 500 calls for SAE 90 for the transmission. I cannot find it at autoparts stores or online.
Is 75W90 an acceptable substitute?

Thank you,

Dana Stewart

[TBR125]

The 90 is the important part which is the thickness of the oil (please correct me lubricant gurus if I am mistaken) and the W is the operating temp range. I currently use Lucas 80W-90. 75W-90 is fine but I will see if I can find a good chart.

The manual simply states sae90 as the W will vary whether it is summer or winter etc.

[Dstewart73]

Thank you. I’ll try the 80W90.

[Forbes1964]

The 90 is the important part which is the thickness of the oil (please correct me lubricant gurus if I am mistaken) and the W is the operating temp range. I currently use Lucas 80W-90. 75W-90 is fine but I will see if I can find a good chart.

The manual simply states sae90 as the W will vary whether it is summer or winter etc.

Actually both numbers are important. But your basic premise is correct. The W is the viscosity when tested at 0 degrees F. The other numbers is the viscosity when tested at 212 degrees F. So 75w-90 flows like 75 viscosity at 0 and like 90 viscosity oil at 212. .Bottom line, yes it can be used in place of 90 weight oil (or any oil between 75 and 90.)


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