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[pembroke]

I've got a X reg 2.5 omega with a manual gearbox. Shifting gears is not smooth, it feels a bit stiff. I just had it serviced and cambelt/water pump changed, the mechanic lubricated the gearbox but saw nothing wrong. Any ideas?

[tunnie]

Omega manual boxes are not the best, mines a bit cluncky when cold, and can be sticky putting in first. Once warm its ok though

[JasonH]

The gearboxes can be a bit stiff on Omegas.

Best bet is to get the gearbox oil changed and filled with the latest synthetic GM oil. Vauxhall are very specific on the oil to use.

It should be a bit better but will never be slick!

[MickAP]

Worse in cold weather, especially 1st and reverse from cold start. Once warm no probs.

Mick

[tomoco]

Mine's starting to annoy me that much im thinking of getting an auto. Anyone want to swap?

[tigers_gonads]

on my 3rd manual miggy and never had a problem with any of them to be honest 

then again, i've drove some right sheds over the years 

[jonathanh]

I'd suggest changing gearbox oil.  Mine was a little rough until I changed it, now it is pretty good (not perfect mind but quite a bit better)

[GastronomicKleptomaniac]

My MV6 is a bit sticky going into 1st when cold, I usually end up going into 4th then 1st.

 MY ex-plod must have had a new box at some point, it had 160k on the clock but the gearbox felt brand new.