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Thread: Radiator hoses? Just checking

  
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    Radiator hoses? Just checking

    Was going to renew coolant & flush system (incl taking stat out) but am possibly running out of daylight time now as i've not done it before.


    Just want to check i've got the right hoses in mind.

    TH - top hose
    BH - bottom hose.

    Pretty sure on the top hose - which leads into the stat housing.

    Went looking for the bottom hose, but couldn't find it - was looking on the same (drivers) side.

    The only other hose i can see really looks like it connects mid-way really, but it's the only other one i can see.

    So i'm just checking to see whether this is what's called the bottom hose or not?


    If so, when you reverse flush, which end do you recommend disconnecting? I'm assuming the engine end & not the radiator end would be easiest?

    Pics:





    Gracias

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    yes mate, the hose midway down the radiator on passenger side is classed as the bottom hose. if you are reverse flushing then feed the water in through the thermo entrance and it will issue from the bottom hose. then flush the radiator through the top hose and out the bottom.
    word of warning
    when you have done the job make sure you go for a good 20 mile drive and allow the stat to open and all the antifreeze to circulate, or your engine will not be protected. the numpty over the road from me did not do this and i have spent 4 hours today, freezing my nuts off, sorting his engine out for him

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    Quote Originally Posted by steve1412 View Post
    yes mate, the hose midway down the radiator on passenger side is classed as the bottom hose.
    Cheers pal. I thought it would be, but it's best making sure.

    thermo entrance and it will issue from the bottom hose.
    excusemoi?! Says you what???!


    thermo entrance?
    I take a stab at something issuing from the bottom hose meaning coming out of the bottom hose in laymens terms
    but thermo entrance?

    word of warning
    when you have done the job make sure you go for a good 20 mile drive and allow the stat to open and all the antifreeze to circulate, or your engine will not be protected. the numpty over the road from me did not do this and i have spent 4 hours today, freezing my nuts off, sorting his engine out for him
    Thanks again. Job for the weekend for sure then.

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    sorry - thermostat opening area

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    Ah cheers. Here's hoping the weather is fine for next weekend.



    I was googling earlier, which mentioned not diluting red/pink antifreeze as it's oil based. What's that all about? Surely you don't stick it in neat??

    Is a 1:1 split a fair ratio or something like 2(AF):3(Water)?

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    red should be diluted with a 25% water mix to give good protection. the red antifreeze is organic acid based to protect vital rubber seals.

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    75% red anti freeze : 25% water right?

    I should really get the garage at work to test the current strength as we're supposed to be due a few bad days here.

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    I was advised by vauxhall to just use 2 litres of red anti freeze and the rest water? I think this is just under 50% anti freeze.

    Is this wrong?

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    Quote Originally Posted by Bubba View Post
    I think this is just under 50% anti freeze.

    Is this wrong?
    Can't confirm as i can't find my haynes manual lol.

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    Quote Originally Posted by Bubba View Post
    I was advised by vauxhall to just use 2 litres of red anti freeze and the rest water? I think this is just under 50% anti freeze.

    Is this wrong?
    Found my Haynes

    You have a 1.8 don't you?

    It says 1.8's with air con have a 7.0 litre capacity

    It also goes on to say a 1:1 ratio mix of anti freeze & water will protect up to -37c, which should be more than we'll experience, even as bad as this winter will get.

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