Found this on a web site.
Has this type of pattern ever been used in Australia?
Asymmetrical patterns - Used in some lanes to counter the natural advantage that left-handed rollers would have on most symmetrical oiling patterns. More oil is placed on the right hand boards so that it doesn't wear away as quickly. Although there are no BTBA rules against asymmetrical patterns, they are not generally used. With such a pattern, right handed players would benefit from a more heavily oiled lane in the first few games of the day
Has this type of pattern ever been used in Australia?
Asymmetrical patterns - Used in some lanes to counter the natural advantage that left-handed rollers would have on most symmetrical oiling patterns. More oil is placed on the right hand boards so that it doesn't wear away as quickly. Although there are no BTBA rules against asymmetrical patterns, they are not generally used. With such a pattern, right handed players would benefit from a more heavily oiled lane in the first few games of the day