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Originally Posted by pikcachu
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Yeah, definitely not going for the SRF. That's silly. That $18 a bottle for the RBF600 is only for 500ml though. I will need at least two bottles to flush, so ~$36. That's about 2.5x the price of a high-end street low-viscosity fluid, like ATE SL.6.
Still, my serious SCCA racing brother swears by the RBF 600. And it sure seems to be the popular choice on this forum. I'm resigned to spending the money on it.
My question though is still about using these very high-viscosity fluids in this car on a routine basis. The standard fluid is a low-viscosity to improve the action of the ABS and all the stability tweaks it is doing. I'm guessing that while the fluid is hot on a summer race day it's thin enough not to matter.
But, on a cold rainy day, when you really need the ABS and stability control, will these high-viscosity fluids reduce their effectiveness? And especially in the winter? Anyone notice issues with high-viscosity fluids in colder weather?
Do people flush back to stock low-viscosity fluids for the winter?
I know that high-temp fluids should be flushed annually anyway. Guess it isn't a big deal to say they have a six month life and go back to LV fluid for the winter. Would like to know what people do.
Related question. Nobody has referenced activating the ABS during a flush. Is it necessary? What if I'm going between high-temp and LV fluids? And how do you activate the ABS pumps if I want to?