For these items…
1. Engine oil cooler
2. Main radiator
3. MTF cooler
4. PSF cooler
…Are there any aftermarket options that are proven to work better than good-condition stock coolers, assuming a stock engine bay and underpanels? If so, how much better?
I know credible people swear by do88 and CSF. But I’ve also seen posts (sometimes from the same people) suggesting there’s not much improvement to be had vs. stock. That lines up with my understanding of cooling system theory, i.e. bigger radiators won’t help much if airflow is the limiting factor, which it almost always is. So, it’s hard to know what to think.
I’ve also read that the oil diverter valve mod helps a little, and higher octane fuel can help fairly significantly. Bimmerworld also apparently likes to control oil temps with engine oil choice.
What else is out there that has a track record (pun intended) of improvement vs. just replacing everything with new OE?
1. Engine oil cooler
2. Main radiator
3. MTF cooler
4. PSF cooler
…Are there any aftermarket options that are proven to work better than good-condition stock coolers, assuming a stock engine bay and underpanels? If so, how much better?
I know credible people swear by do88 and CSF. But I’ve also seen posts (sometimes from the same people) suggesting there’s not much improvement to be had vs. stock. That lines up with my understanding of cooling system theory, i.e. bigger radiators won’t help much if airflow is the limiting factor, which it almost always is. So, it’s hard to know what to think.
I’ve also read that the oil diverter valve mod helps a little, and higher octane fuel can help fairly significantly. Bimmerworld also apparently likes to control oil temps with engine oil choice.
What else is out there that has a track record (pun intended) of improvement vs. just replacing everything with new OE?