2004 S60 Hessitation downshifting and upshifting

mickjenkins · Post by **mickjenkins** » 08 Apr 2015, 18:13

Dear Forum,

I am having a little problem with my S60. When i accelerate and going from the 1st to 2nd gear it does not slip but rather feels like it hesitates and it feels like the transmission wants to downshift. Also my engine compartments smells of burning oil. I check the oil and smelled it of gasoline. I ran Lucas fuel injector cleaner in it and also 2 bottle of gum-out cleaner as well the problem persists. Today i tried a Royal Purple fuel treatment which is supposed to be a good product. Has anyone else experience anything like this. Please help

mickjenkins · Post by **mickjenkins** » 09 Apr 2015, 16:41

UPDATE: Today i went and got some Lucas Transmission Fix Fluid, not sure of the actual name, and pored approx. 10-12 oz. in the dipstick and there is a significant difference in the shifting.

The smell of the gas in the oil is probably a bad o-ring?

What do you recommend i do now. The problem is more than likely the transmission. Should i have it serviced? Flushed? Drain it my self and refill? please help. Has anyone experience any transmission problems with the s60.

Mick

Post by **vtl** » 09 Apr 2015, 21:52

Drain&fill. Then, if d&f didn't help, rebuild valve body.

Post by **vtl** » 09 Apr 2015, 21:53

Also put your car on ramps and check underneath where oil is leaking from and where it touches a hot surface.

Post by **GBS** » 10 Apr 2015, 11:01

I did a drain and fill then another after 5k miles, then I did a flush where you pump out a quart at a time running the motor after another 10k. I've read that doing the drain and fill on older transmission breaks things up slower, then the full flush to get "everything" out. Drain and fill is super easy when doing oil change anyways. Honestly I'm not sure I noticed that much difference, mine has a slow "reverse to first" engagement, but its 190k miles original transmission so just needs a bit more time and I'm hoping this will at least not make it worse.

I'm not an expert but the transmission level needs to be pretty spot on, adding 12oz without taking some out might be too much fluids, or its at where it should be... I'd check the level to make sure.

mickjenkins · Post by **mickjenkins** » 13 Apr 2015, 20:42

oh okay, ill do the drain and fill this weekend. does anyone know about if adding 12 oz too much fluid is gonna make things worse.

Post by **vtl** » 13 Apr 2015, 21:45

You will probably notice that the transmission is shifting worse with extra 12 oz. Mine was worse with 500 ml ~ 17 oz extra.

If you do drain and fill anyways, why not adding transmission treatment at that time?