DC350

Yo, i just got my exhaust fixed (from lawn mower sound) and i can hear my nice low exhaust in the back, But before i replace the tranny there was no fluid in it, and it sounds like a UFO when taking off (cool) but i got my new one, put the redline mt-90 in it, and it doesn't sound bad at all, but it sounds like it did before when there was no tranny fluid in it, only on a way lower scale. Think the tranny fluid could be low? or just the worn tranny. Thanks

Evan