Motul 660 vs Castrol SRF
#1
Instructor
Thread Starter
Motul 660 vs Castrol SRF
FCP Euro is backordered on Castrol SRF...went with 660 in the meantime until SRF is back in stock...The first day I took out the 991.1 C2S, the OEM fluid got cooked. From what I am reading, the 660 takes on moisture more quickly and needs to be changed more frequently. Just wanted to get other members' experience.
#4
Rennlist Member
Castrol SRF hands down.
If you want the very best then go with Endless RF650.
If you want the very best then go with Endless RF650.
#5
Rennlist Member
From what I am reading, the 660 takes on moisture more quickly and needs to be changed more frequently. Just wanted to get other members' experience.
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moto_geek (04-03-2024)
#6
Instructor
Thread Starter
Buy it once and you won’t have to pay for the second round. Are you familiar with their lifetime replacement? I use it for brakes and oil changes. I stopped paying for replacement parts (after the first purchase) years ago.
#7
Rennlist Member
yes, of course... just not sure what that has to do with buying brake fluid that they don't have in stock.
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#8
Instructor
Thread Starter
All I was asking was anyone’s experience with Motul 660 vs SRF since I will be using it until the SRF goes back into stock there. There is still a credit applied when the return for the new product is made.
#9
Rennlist Member
wow... OK, best of luck.
#10
Motul rbf 600 and 660 work well, but require relatively frequent changes. Castrol srf definitely lasts longer.
#11
Rennlist Member
Do you rebottle the fluids and ship it back to them? Curious
#12
Instructor
Thread Starter
#13
Rennlist Member
I used Motul 660 for a couple of years and thought it was great until I started using the SRF. I found two differences that made a difference. First it lasts longer, second I found better modulation of the brakes. For me the cost is not a material factor as I found I used 2x as much 660 in one track season as opposed to the SRF.
#14
Instructor
Thread Starter
I used Motul 660 for a couple of years and thought it was great until I started using the SRF. I found two differences that made a difference. First it lasts longer, second I found better modulation of the brakes. For me the cost is not a material factor as I found I used 2x as much 660 in one track season as opposed to the SRF.
#15
Rennlist Member
So you send back all your used motor oil as well?
Wow, IMHO that's just wrong. Kind of like the ladies I see returning dead Christmas poinsettias to Costco in March. But I'm glad you found a loophole that saves you a few bucks...
Wow, IMHO that's just wrong. Kind of like the ladies I see returning dead Christmas poinsettias to Costco in March. But I'm glad you found a loophole that saves you a few bucks...