BN139QMB oil?

[crabjoe]

With 6 miles on my trailmaster, I went to change the oil.

I have no idea what happened to the 10w40 I picked up a couple weeks back, so I ended up using 15w40.  After the change, the motor was super quiet. I mean no metal clank at startup and the pitch was just lower.  It actually sounds like a quality motor.

Took it for a 2 mile ride and it feels like the engine no longer revs as high as before.   Where I was able to hit 34mph, I can now only get to 30mph.

Has anyone else experienced a drop in performance but using a heavier weight oil?

[tortoise2]

Jun 9, 2020 19:06:38 GMT -5 crabjoe said:

went to change the oil . . 15w40 . .  feels like the engine no longer revs as high as before

Unclear how much oil was added?

½ quart shows around half way up the dipstick cross-hatched end markings, not screwed in, on my 139QMB.

[crabjoe]

Jun 9, 2020 20:58:21 GMT -5 tortoise2 said:

Jun 9, 2020 19:06:38 GMT -5 crabjoe said:

went to change the oil . . 15w40 . .  feels like the engine no longer revs as high as before

Unclear how much oil was added?

½ quart shows around half way up the dipstick cross-hatched end markings, not screwed in, on my 139QMB.

I have no idea how much, by measurement, was actually added. I have a diesel pickup, so I just some oil I had left over from my last oil change. All I did was add oil till it was about 90% of the way up the hatch marks.