mid bearing grease job.

[levonhelmet]

hi,my brother was helping tune & clean my ski yesterday and i realized he had greased my mid bearing. however he didnt use seadoo synthetic grease .he just used the grease i had in my gun which is castrol mp, a non synthetic grease. will this create any problems ? mixing the two grease's. this is asumming the previous owner actually used the correct grease as well.he did say that he only put a very small amount in.
thanks for help & opinions
cheers

[levonhelmet]

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[winterstick]

dont worry about it
even if it does react it will still offer lubrication unless it catches fire