Jpierro79
Senior Member
- First Name
- John
- Joined
- Mar 6, 2019
- Threads
- 33
- Messages
- 398
- Reaction score
- 273
- Location
- Myrtle beach South Carolina
- Vehicle(s)
- 2018 type R 2015 c300
- Thread starter
- #1
I know you there are going to be a lot of critics about what I’m going to recommend. But after 21 years as a professional automotive technician and some time of fabrication and 7 years of tuning and modifying I would never suggest something unsafe. EVER!!!
Changing the viscosity of a manual transmission has drastic affects in synchro operation. Go too thick it won’t shift when it’s cold go to thin it grinds and wears out prematurely.
It was obvious Honda went too thin for their synchro design. I’ve come up with a solution that keeps feel closer to stock but smoother.
There are 3 mixtures that work
1. 1.5 qts amsoil Honda certified .5 qt Lucas transmission
Firmer shift no lockout. Slightly more pressure to engage gear. Higher film strength than stock.
2. 1.5 qts torco racing mtf gl-5. .5 qts of Lucas transmission.
Firmest shift but better film strength. Higher wear protection. Than method 1
3. 1.5 qts torco racing mtf gl-5 .5qts lucas trans 2ounces of Liqui Moly cera tec
This has closest to stock feeling due the decreased friction of cera tec. Highest protection due to cera tec creates ceramic barrier on high pressure contact areas. Absorbs into metal leaving long lasting protection.
Most engines now have some type of coating on cam shafts or other engine parts often being ceramic. Yes that’s more effective than additives but there’s no doubt this has helped a lot.
It will NOT affect the limited slip differential like typical clutch style as it is a Torsten style and works under gear meshing not clutches.
If your worried about warranty then just use 2 qts of amsoil. It’s better than the Honda fluid and certified but really isn’t much of an improvement at all by itself.
I personally do not use additives often at all. With engine oil is sooner change oil more often than out additives in. But this issue with transmission on hot days and random 1-2 grinds was driving me nuts. This transmission was already replaced.
I had already done acuity bushing and shifter selector upgrade to little avail.
If you don’t agree with this please just don’t comment. I’m not going to listen to people who have less than 1/10th the actual experience I have. This is for people who want the best help as there is no real solution until an upgraded synchro design is made. Unless you want to buy a 10k racing transmission.
Changing the viscosity of a manual transmission has drastic affects in synchro operation. Go too thick it won’t shift when it’s cold go to thin it grinds and wears out prematurely.
It was obvious Honda went too thin for their synchro design. I’ve come up with a solution that keeps feel closer to stock but smoother.
There are 3 mixtures that work
1. 1.5 qts amsoil Honda certified .5 qt Lucas transmission
Firmer shift no lockout. Slightly more pressure to engage gear. Higher film strength than stock.
2. 1.5 qts torco racing mtf gl-5. .5 qts of Lucas transmission.
Firmest shift but better film strength. Higher wear protection. Than method 1
3. 1.5 qts torco racing mtf gl-5 .5qts lucas trans 2ounces of Liqui Moly cera tec
This has closest to stock feeling due the decreased friction of cera tec. Highest protection due to cera tec creates ceramic barrier on high pressure contact areas. Absorbs into metal leaving long lasting protection.
Most engines now have some type of coating on cam shafts or other engine parts often being ceramic. Yes that’s more effective than additives but there’s no doubt this has helped a lot.
It will NOT affect the limited slip differential like typical clutch style as it is a Torsten style and works under gear meshing not clutches.
If your worried about warranty then just use 2 qts of amsoil. It’s better than the Honda fluid and certified but really isn’t much of an improvement at all by itself.
I personally do not use additives often at all. With engine oil is sooner change oil more often than out additives in. But this issue with transmission on hot days and random 1-2 grinds was driving me nuts. This transmission was already replaced.
I had already done acuity bushing and shifter selector upgrade to little avail.
If you don’t agree with this please just don’t comment. I’m not going to listen to people who have less than 1/10th the actual experience I have. This is for people who want the best help as there is no real solution until an upgraded synchro design is made. Unless you want to buy a 10k racing transmission.
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