SAE-30, SAE-30 HD - Can they be mixed?

May 26, 2013 3 Replies

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?



Thanks.


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

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

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?

Thanks.

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