Ok…bear with me here:
Im ready to do a drain and fill on my manual trans (first change, ~11k miles)…will be using wither Redline or Royal Purple GL4. Im thinking that after a majority of my 75w90 drains out of my hot/warm trans, I would like to dump a quart (or two) of dino 5w30 motor oil through the fill hole to "rinse out" the trans of as much old fluid as I can before refilling with a synthetic fluid. My thinking is that the lower viscosity of the motor oil will flow easier and "pull" more "gunk" out with it. Then I would let the motor oil drain out for 25-35 minutes before refilling with syn 75w90. I only have 2 quarts of dino motor oil left as I made the switch to syn, so I figured this would be a decent way to get rid of it. Questions/comments:
1 - Is there any compatibility issues between the motor oil and any trans mechanisms?
2 - Will the motor oil react in a negative way with the new 75w90 (FYI - Im not concerned with the possibility of altering the weight in the tiniest of ways
)
3 - Am I just being too cautious with getting rid of the possible left over "gunk" in the trans?
4 - Should I allow a longer drain to insure as much motor oil is removed as possible?
I figure as infrequently as I change the fluid (every 2yrs/24k miles…not 5yrs/60K as recommended) I want to do as thorough as a job as possible.
Thanks
Na Zdrowie!
Keith
Im ready to do a drain and fill on my manual trans (first change, ~11k miles)…will be using wither Redline or Royal Purple GL4. Im thinking that after a majority of my 75w90 drains out of my hot/warm trans, I would like to dump a quart (or two) of dino 5w30 motor oil through the fill hole to "rinse out" the trans of as much old fluid as I can before refilling with a synthetic fluid. My thinking is that the lower viscosity of the motor oil will flow easier and "pull" more "gunk" out with it. Then I would let the motor oil drain out for 25-35 minutes before refilling with syn 75w90. I only have 2 quarts of dino motor oil left as I made the switch to syn, so I figured this would be a decent way to get rid of it. Questions/comments:
1 - Is there any compatibility issues between the motor oil and any trans mechanisms?
2 - Will the motor oil react in a negative way with the new 75w90 (FYI - Im not concerned with the possibility of altering the weight in the tiniest of ways
3 - Am I just being too cautious with getting rid of the possible left over "gunk" in the trans?
4 - Should I allow a longer drain to insure as much motor oil is removed as possible?
I figure as infrequently as I change the fluid (every 2yrs/24k miles…not 5yrs/60K as recommended) I want to do as thorough as a job as possible.
Thanks
Na Zdrowie!
Keith