Preventative Maintenance - Oil Coolers & Hoses

Seeking input from the CSR brain trust.

My boat is a 2007, always used in the fresh, clean water of Lake Michigan (and put away for half the year). I replaced the hardwall water intake hoses on both engines and the generator as they had significant cracking, but my cooling system hoses seem to be in good condition. Should I go ahead and replace those as they are 15 years old?

I'm also thinking about my transmission oil coolers. No issues with them and they look to be in good condition, but being 15 years old - should I replace them proactively? If so, OEM, Mr. Cool or Lenco?

I'm not as worried about the heat exchanges for the main engine cooling system, as if those fail - it would only mix lake water with coolant, right? Nothing detrimental like the transmission fluid mixing with lake water.

Appreciate the insight from all.

I can vouch for Mr Cool. Great product, made in the USA, priced at a fraction of OEM.

Now that the site's back online, anyone else have any experience in this area?

Does anyone have a preference or recommendation on cooling water hoses? I'm finding Shields Flex II and Trident Silicone hoses. Applications are:

1. Generator Strainer to Raw Water Pump
2. Generator Heat Exchanger outlet to hull discharge
3. Main Engine Heat Exchanger outlet to Exhaust riser.
4. Exhaust Hoses on Mains that are the bypass while idling that go through hull side discharge.

Thanks,

Jaybeaux

Jaybeaux said:

Does anyone have a preference or recommendation on cooling water hoses? I'm finding Shields Flex II and Trident Silicone hoses. Applications are:

1. Generator Strainer to Raw Water Pump
2. Generator Heat Exchanger outlet to hull discharge
3. Main Engine Heat Exchanger outlet to Exhaust riser.
4. Exhaust Hoses on Mains that are the bypass while idling that go through hull side discharge.

Thanks,

Jaybeaux

Click to expand...

I recently replaced all generator hoses and the engine water intake hoses. New clamps all around. All MPI hose, from this guy on Ebay. About the best prices I could find and he shipped quickly.

https://www.ebay.com/itm/322511048254?epid=2086371832&hash=item4b17280e3e:g:gFMAAOSw34FVGA3b