Hugh,
I have several toyota ase master mechanics here locally that have switched their manual tranny oils over to the 267 gear oil from schaeffers. Both stated they saw a definate improvement over the prev gear oil they were running.
The 741 does not have moly in it. As for the difference between the 75-90 and 80-90, where you are at, this will not cause you any problems for pumpability.
Look at this web page to see a couple of other aspects about the schaeffers gear oils you might want to look at other than just pumpability.
I know that in that page I was demonstrating the 267 against a full synth marine gear oil but every gear oil I have tested against so far has demonstrated exactly the same results as this marine oil did with the exception that this marine oil did seperate from the water slightly faster than some of the other standard gear oils. Also, at the bottom, this kinda shows how the moly can affect the metal surface over a longer period of time.
I have several toyota ase master mechanics here locally that have switched their manual tranny oils over to the 267 gear oil from schaeffers. Both stated they saw a definate improvement over the prev gear oil they were running.
The 741 does not have moly in it. As for the difference between the 75-90 and 80-90, where you are at, this will not cause you any problems for pumpability.
Look at this web page to see a couple of other aspects about the schaeffers gear oils you might want to look at other than just pumpability.
I know that in that page I was demonstrating the 267 against a full synth marine gear oil but every gear oil I have tested against so far has demonstrated exactly the same results as this marine oil did with the exception that this marine oil did seperate from the water slightly faster than some of the other standard gear oils. Also, at the bottom, this kinda shows how the moly can affect the metal surface over a longer period of time.
