How to change coolant on 625
 

I just purchased a 2006 DCB F29 with twin 625’s and I really like the Ilmor engines. I am trying to get all the maintainence items up to date. I don’t have a manual and I am not sure how to best get all the fluid out. I’m not sure how many people still look at this thread. It’s a shame they are not making the 10’s anymore. Thanks
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There is likely a plug on the block, somewhere down above the oil pan, and probably one on each side.

Probably not a ton of help in changing the coolant, but here’s a manual you may find helpful.
https://www.manualslib.com/manual/89...mor-Mv-10.html

Thanks for replies. The manual does say how to properly fill but doesn’t really say how to drain engine. Like sydwayx said there has to be block drains. I think probably mine have never been done.

Which F29 did you buy?

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This one and I love it. Best handling cat I have owned.

very nice. Yeah, I don’t think I’ve ever heard anything bad about an F29.

None of the manuals cover draining the antifreeze. I gave Ilmor a call and they said there were no drains and to pull the lower coolant hose. I did this and a lot of coolant came out. I don’t know if all came out or not but it must have been most of it. I also pulled the end cap and verified everything looked good. Before you pull the end caps off the coolers order some 4” Sek-dure gaskets. It was a good thing to do this as I found broken off impeller vanes in the lower cooler of 1 of the engines. On my engines there is a purge fitting on the thermostat housing to make sure you get all the air out of the system.

Thanks for the update.