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26th April 2006 | 13:48

#1 (permalink)

Superpilot

Joined: May 2001

Posts: 1,909

Likes: 24

From: England

Engine oil grading

Can someone explain to me what the numbers on a bottle of aviation oil mean? Say for example 20W-50, EE110, EE120 and any more examples you can think off.
Thanks