On May 26, 7:03*pm, dpb wrote:
On 5/26/2013 5:50 PM, DerbyDad03 wrote:

My son was helping clean up the garage and decided to combine some half
empty containers of oil. He mixed a small amount of SAE 30 HD into a
larger container of SAE 30. Probably less than 25% HD.

The only thing I use SAE 30 for is my lawnmower. A little SAE 30 HD
mixed with the SAE 30 isn't going to make any difference is it?

No. *The HD is probably what is specified, anyway.

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HD means heavy detergent, doesn't it? I doubt it makes
a difference for the mower.