Question about BMW 330
How old is the gearbox oil? In some cases, older oil (higher viscosity when old) will be too "thick" in colder weather and inhibit the synchro on your gears from slipping into 1st gear. The reason it only happens in 1st, is 'cause the shifting mechanism on the forward change is finer than that of the reverse change.
POSSIBLE Solution: Replace the gearbox oil with a lower viscosity ie. "thinner" oil.
Posted on Mar 09, 2009
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Posted on Jan 02, 2017
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