Your old, high-mileage car is sluggish for one reason (times 3) : Maintenance, maintenance, maintenance! The gear oil in the transmission has probably never been changed, and probably has the viscosity of asphalt. Drain it out and replace it with new, but be careful to use the correct replacement fluid as specified in the owners manual. Some manual transmissions actually specify to use Automatic Transmission Fluid, and not the 90-weight gear oil that you might first expect. There's a good chance that it is sluggish because it needs new spark plugs, wires, and a distributor cap, not to mention a few cans of carburetor cleaner. Do that, and you are bound to see some improvements.
Stop complaining about your car and just be happy with it. Its old, has high mileage, and has a lot of abuse. From my experience with Honda's and Mitsubishi's, I would be glad if the only problems I had were the simple ones you listed above, and I would have been very happy to drive them also. If you can't get over those insignificant problems, then you should of bought a new car. It won't be much better either since plenty of new car owners would love to have your car over theirs.
Any ideas what kind of oil goes in my car I don't have the owners manual I've been serching all over for a manual.
Try ordinary engine oil in the transmission, say 10w-30,or from a dealer Honda Manual Transmission Oil.
The gear grinding has stopped. I just have to begin with putting it in 4th before I put it in reverse, and I cannot change from 4th to 3rd - if I do that it grinds gears.
Other than that, nothing has gone wrong.
Just needs a new cam belt.
You most likely have a hydraulic clutch, check the fluid. P.s. it use's dot 3 brake fluid.
I changed oil in my 2007 Honda Civic's manual transmission. I did not read the manual and used 75/140 synthetic gear oil. The car shifts smoother, runs quieter, what harm can this do? I am old school and believe gears need gear oil.
Now that you've had the 75/140 in your 2007 Civic with manual transmission for a while, is it still working fine? I have 75w90 manual transmission fluid and would like to use that. What do you think? Redline Motor Oil recommends their 70W80, and I was hesitant to use even 75w90 until I saw your comment.