As most of you that have been reading and responding to my posts (which is very much appreciated) know that when I completed my clutch job I put the wrong oil in the manual transmission. I used a GL-4 140 gear oil which has been way to thick and caused a lot of rough and hard shifting since finishing the clutch job yesterday. I was looking online for the specific GL-4 75w-90 oil that nissan calls for and found it for 15 dollars a bottle from AMSOIL. Just to see if that was the best deal I called the local Nissan dealership here in Charleston, SC and inquired on what it costs for a quart of manual trans gear oil. I got quoted back at 12 dollar per quart. I asked the parts guy if the gear oils used in the late model Nissan trucks is a GL-4 or GL-5. He said that the bottle that they carry does now specify if it is GL-4 or Gl-5, but it is the genuine Nissan manual trans fluid. I figured ill just go with the dealership stuff since it is cheaper and I wont have to pay for shipping. Anyone know if even the late model Nissans still use a GL-4 from the factory? I just can't afford to put the wrong stuff in.
Were you ever able to find out if the factory stuff is GL-4? I am also wondering if I need to do a few other things to the clutch as well. The pedal is pretty soft compared to what it felt like before and the pressure point or catch point of the clutch is starting to feel like it is back to where it was prior to clutch replacement. Should I adjust it at the pedal? Should I replace the slave cylinder? When I was bleeding the clutch after the replacement was done I did notice that when my dad held the clutch pedal to the floor that the slave would push the fork then come back just a bit. Also how much travel should there be on the shift fork on the bell housing? Any help would be appreciated. BTW my truck is 98 Frontier 4x4 2.4liter
Were you ever able to find out if the factory stuff is GL-4?
It actually doesn't say on the bottle, which surprises me. If you Google it, you'll find several web sites listing it as GL-4. I'm sure that it's GL-4. The 2nd gens call for GL-4, and the Nissan MTF is listed in the owner's manual as the recommended fluid. I wouldn't have put it in my truck if I had any doubts. Not sure how reassuring that is to you.
Im sure that it is a GL-4. I appreciate you looking into that for me. Im gonna go and pick some up today and see if it helps with the shifting. The oil I put in there was rather thick and it was 60 degrees outside at the time I filled it so I can only imagine how thick it was this morning when I left and it was 32 degrees out. Only problem I am really worried about today is that the pedal is soft. I don't know if it is from the replaced pressure plate being soft or if I need to make some more adjustments somewhere else or have the slave replaced entirely. The truck isn't grinding at all during shifts its just hard to get in an out of gear from what I believe to be the wrong trans gear oil. Also the catch point doesnt really seem to feel that much different than the clutch I pulled out that ha nearly 120K on it. I guess if I am still having issues with it after I replace the gear oil then ill try replacing the slave.
shifts 100% different now with the OEM oil. Thanks for the help guys
Great to hear that you were successful in your project. I assume that your truck is a 1st gen (98-04) Frontier. I have an 04 and am going to be replacing the MT oil soon. I have looked for the MT fluid required for the job and concluded that the Amsoil ($10.50/qt) is cheaper than the Nissan non-synthetic at $12.49/qt.
When you changed your fluid, did you remember to use thread sealer like this:
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