Emergency Substitute for GL-4 75w-90
- Thread starter sailorbob74133
- Start date
- Status
Originally Posted By: sailorbob74133
Just looked at the BITOG chart, and you're right; 10w40 should be just fine for me since I live in a pretty hot environment. The chart in the Nissan manual even says I could run straight gl-4 90 gear oil due to the heat here, so any xW-40 should be fine for a while I guess.
A GL4 straight 90 in a 1990's manual would have been an ISO 220(5EP) gear oil of KV@40*C 198-242 cSt and KV@100*C of 18.5-24.0 cSt.
No xW40, not even a 15W40, would cut it.
Just looked at the BITOG chart, and you're right; 10w40 should be just fine for me since I live in a pretty hot environment. The chart in the Nissan manual even says I could run straight gl-4 90 gear oil due to the heat here, so any xW-40 should be fine for a while I guess.
A GL4 straight 90 in a 1990's manual would have been an ISO 220(5EP) gear oil of KV@40*C 198-242 cSt and KV@100*C of 18.5-24.0 cSt.
No xW40, not even a 15W40, would cut it.
Originally Posted By: zeng
A GL4 straight 90 in a 1990's manual would have been an ISO 220(5EP) gear oil of KV@40*C 198-242 cSt and KV@100*C of 18.5-24.0 cSt.
No xW40, not even a 15W40, would cut it.
I believe that 1990's SAE 90 had majority viscosity range of about 13.5 cSt. SAE 40 had average of about 13.5.
A GL4 straight 90 in a 1990's manual would have been an ISO 220(5EP) gear oil of KV@40*C 198-242 cSt and KV@100*C of 18.5-24.0 cSt.
No xW40, not even a 15W40, would cut it.
I believe that 1990's SAE 90 had majority viscosity range of about 13.5 cSt. SAE 40 had average of about 13.5.
Many transmissions spec 75w90 or 10w30 motor oil. Synchromesh is a 10w30 wt oil made for transmissions as is redline MTL that is very popular. I had Gl5 in my jeep and it shifted horribly, I drained it and put strait 30 rotella that also says on the jug good for gear boxes and transmissions and it shifts good, except in very cold weather. The factory part number for the fluid is Mopar 10w30 synthetic motor oil.
There are several options for a fluid in manual transmissions, 10w30 motor oil, Synchromesh type fluids, 75w90 GL4, and as someone else mentioned tractor transmission and hydro fluid like shell spirax S4 TXM which has the GL4 spec on the back of the bottle. Spirax or similar can be found in many stores such as the local co-op and tractor supply. Any thing is better than empty though so a walk mart 10w30 or 40 would be fine too.
There are several options for a fluid in manual transmissions, 10w30 motor oil, Synchromesh type fluids, 75w90 GL4, and as someone else mentioned tractor transmission and hydro fluid like shell spirax S4 TXM which has the GL4 spec on the back of the bottle. Spirax or similar can be found in many stores such as the local co-op and tractor supply. Any thing is better than empty though so a walk mart 10w30 or 40 would be fine too.
- Status