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Old 09-24-2006, 11:50 AM
bpeters2's Avatar
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Join Date: Mar 2006
Location: NW Indiana
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'85 300td coolant system routing

HI everyone,

i'm currently installing a frybrid WVO kit on my 300td. (w/ A/C) The instructions say to 'T' into the coolant system at the heater core supply and return lines. I'm pretty sure we have found both of these lines ( the two collant lines going through fire near the top). I'm a little unsure which is return and which is supply. Can somebody please help me out, unfortunately the repair manual I bough t does not include a cooling system diagram. Are there any oinline diagrams that anyone knows about. Thanks a lot, hopefully the rest of the install goes well. Also does anyone have experinece/ideas about a good way to route my fuel/coolant lines under the car back to the new WVO tank in the rear (behind rear axel). Thanks a lot

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Old 09-24-2006, 12:17 PM
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Location: Sonoma Wine Country
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I think the supply line is the one coming from the auxiliary water pump, low down on the right (passenger) inner fender.

"Buster" in the '95

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Old 09-25-2006, 10:55 PM
bpeters2's Avatar
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just though I would bump this up to the top, any insights. Thanks
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Old 09-25-2006, 11:07 PM
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Here's a diagram of the cooling system:
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