banzaisan

Hello,

I have a 5 speed transmission (93, 964) that was rebuilt by a reputable shop near me. When it's hot here in Chicago, my transmission becomes difficult to shift into lower gears. Is there anything I can do besides not driving on a hot day? Should I look into a transmission cooler?

Thanks in advance.

- Dave

Vandit

Unless you're doing long and hard sessions on a race track, then you might need an aux cooler...

Check out the hydraulics first. Condition of slave cylinder, slave cylinder hose, brake fluid level and fluid age/condition. Maybe bleed the system.

Also look to see if your motor mounts are sagging.

Consider changing the gear oil. Mobil 1 Delvac is popular.

Then check the condition of the linkages in the tunnel.

newsboy

Redline noticeably improved my stiff shifting