Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

I Changed the oil on an old snowblower (1980/ tecumseh 5hp ) that was given to me this year. I have run the motor just to test the operation and adjust the carb. (about one hour total).

I check the oil each time before strting and yeasterday I noticed it was full ,but coal black . Is this normal ? The oil in my mower does not get dirty that fast.

I dont know the history on this motor as I got it third hand.

Should I change it again ?

thanks