Getting rid of grinding and protecting a transmission are two different things. I would NEVER use Synchromesh to replace 90wt gear oil EVER. What everone does to wear out their transmission is their business. This is how internet fads start. Let those who use synchromesh in place of gear oil post their UOAs.
To address the 'masses' wanting better shifting transmissions, Nissan switched to 75w85 from the 90wt gear oils. So, if you want to thin the fluid a little at your next service interval, blend 25-50% RedlineMTL/AmsoilMTF to the Redline MT90/Amsoil MTG. This will drop you into the 75w85 range, while using a full synth product. The further north you go, the higher the percentage to thin. If you're along the south coast or border, I would just stick with the 90wt. I would also think that someone in Alaska/Canada(northerners) could get away with straight MTL/MTF since average trans temps is pretty low. Sounds hypocritical, but MTF/MTL are full sythetics. Hows mineral synchromesh going feel when its too cold up north?
Synchromesh should only be used in transmissions that require it. And, for manual-transmissions/xcases/'end that use a simple mineral ATF(like Mercon-DexronII-III), Synchromesh could be considered an upgrade from ATF.
Notchy manual trannies are quite normal. I don't know if this is because of poor quality cost cutting at the OE level, or if there truely an issue with your unit, or the driver. I think that too many people expect their transmission to shift like the 'arcade videogame versions'. They don't.
Truck transmissions normally have long throws. Make sure you don't release the clutch too early. Sometimes it takes a 2nd person to shift for you while you control clutch to see if you're shifting correctly or not rushing a shift. Usually, when I go on a test drive with vehicle with a shifting complaint, I hop into the passenger seat. This confuses the vehicle owner. I make them drive while signalling for clutch operation while I shift like a Brit. This has elimintated 1/2 of those notchy shifting complaints.
Learn to use your fingertips/wrist and not your palm/arm to shift.
Automakers trying to isolate the drivetrain, from the driver, for consumer statistical NVH garbage, are producing poor shift quality.
Make sure your tranny is topped off cold, on a level surface. Make sure the clutch hydraulics(bled), or mecheanicals(adjusted/lubed), are in working order. Grease or replace the ujoints. Inspect drivetrain mounts or if mileage is high, replace them. Look for upgrades to shifters, shifter bushings, linkages, transmission mounts/isolators, engine mounts,......
Make sure that the rugs, carpet, floormats....don't interfere with the clutch pedal movement.
And, a notchy shift doesn't mean the transmissions life will suffer. Using fluid that is too thin, having a fluid level low, not maintaining it, or simply abusing it, are the causes for short transmission life.
Change the gear oil every 30k/biennial for normal commusters. Severe usage should seriously consider 10k/quarterly changes. 200+ mile a day highway only travelling salemen commuters could push the interval to 50k/yearly.
To address the 'masses' wanting better shifting transmissions, Nissan switched to 75w85 from the 90wt gear oils. So, if you want to thin the fluid a little at your next service interval, blend 25-50% RedlineMTL/AmsoilMTF to the Redline MT90/Amsoil MTG. This will drop you into the 75w85 range, while using a full synth product. The further north you go, the higher the percentage to thin. If you're along the south coast or border, I would just stick with the 90wt. I would also think that someone in Alaska/Canada(northerners) could get away with straight MTL/MTF since average trans temps is pretty low. Sounds hypocritical, but MTF/MTL are full sythetics. Hows mineral synchromesh going feel when its too cold up north?
Synchromesh should only be used in transmissions that require it. And, for manual-transmissions/xcases/'end that use a simple mineral ATF(like Mercon-DexronII-III), Synchromesh could be considered an upgrade from ATF.
Notchy manual trannies are quite normal. I don't know if this is because of poor quality cost cutting at the OE level, or if there truely an issue with your unit, or the driver. I think that too many people expect their transmission to shift like the 'arcade videogame versions'. They don't.
Truck transmissions normally have long throws. Make sure you don't release the clutch too early. Sometimes it takes a 2nd person to shift for you while you control clutch to see if you're shifting correctly or not rushing a shift. Usually, when I go on a test drive with vehicle with a shifting complaint, I hop into the passenger seat. This confuses the vehicle owner. I make them drive while signalling for clutch operation while I shift like a Brit. This has elimintated 1/2 of those notchy shifting complaints.
Learn to use your fingertips/wrist and not your palm/arm to shift.
Automakers trying to isolate the drivetrain, from the driver, for consumer statistical NVH garbage, are producing poor shift quality.
Make sure your tranny is topped off cold, on a level surface. Make sure the clutch hydraulics(bled), or mecheanicals(adjusted/lubed), are in working order. Grease or replace the ujoints. Inspect drivetrain mounts or if mileage is high, replace them. Look for upgrades to shifters, shifter bushings, linkages, transmission mounts/isolators, engine mounts,......
Make sure that the rugs, carpet, floormats....don't interfere with the clutch pedal movement.
And, a notchy shift doesn't mean the transmissions life will suffer. Using fluid that is too thin, having a fluid level low, not maintaining it, or simply abusing it, are the causes for short transmission life.
Change the gear oil every 30k/biennial for normal commusters. Severe usage should seriously consider 10k/quarterly changes. 200+ mile a day highway only travelling salemen commuters could push the interval to 50k/yearly.
