white sludge on radiator cap

[carls vtss]

hi guys just new to this site.i have a vt 5lt have had the head gaskets changed heads were ok water pamp and inlet manifold changed but now im getting white sludge on rad cap have spoken to my mechanic he says its normal and nothing to worry about after spending $1800 not happy can anyone suggest anything
Cheers

[Darcon666]

No it's not normal... The sludge is because oil & water don't mix, but before you confront your mechanic I suggest you flush the cooling system and check it again.

Also check under the oil cap as well... to see if you also have any sludge there as well.

Good luck

[db_notso]

if all the oil is milky i would be very upset
or if coolant is milky that matter
sometimes when doing headgaskets people let coolant down the oil galleries (moronitis disease)
and the milkyness will go away after a good thorough oil change... might be just this but there wouldnot be much gunk just a little bit...
also is your auto fluid milky white? might be a cracked heat exchanger in the radiator for the trans cooler.....

[carls vtss]

No it's not normal... The sludge is because oil & water don't mix, but before you confront your mechanic I suggest you flush the cooling system and check it again.

Also check under the oil cap as well... to see if you also have any sludge there as well.

Good luck

i have flushed coolant twice still getting sludge no water visible under oil cap and no loss of coolant

[Boonz]

check your trans fluid (if its auto) cos the trans coolers can split and leak fluid out into the coolant

[graham7773]

And if it is trans oil in coolant, it takes ages to get rid of it. One new radiator and four flushes later I still get some under my radiator cap

[Darcon666]

i have flushed coolant twice still getting sludge no water visible under oil cap and no loss of coolant

That's good... means that there is no visible leak in the engine but you are still getting oil into the system somehow.

I'm no mechanic and if your car is an auto.... you probably have a lower radiator tank to transmission cooler leak. Check you auto gearbox for any sludge as well.

[TonyJZX]

head gasket

[Darcon666]

head gasket

Unlikely... No sludge/Milk look in the engine oil.

[carls vtss]

That's good... means that there is no visible leak in the engine but you are still getting oil into the system somehow.

I'm no mechanic and if your car is an auto.... you probably have a lower radiator tank to transmission cooler leak. Check you auto gearbox for any sludge as well.

have checked trans oil clean got done 10000 kms ago no sludge visible im thinking maybe its old sludge recirculating a mate of mine told me it takes ages to get out but am keeping an eye on it every 2 days cleaning rad cap

[carls vtss]

And if it is trans oil in coolant, it takes ages to get rid of it. One new radiator and four flushes later I still get some under my radiator cap

i thought if trans fluid was mixing it would be a brownish colour but not using trans fluid very strange my mechanic is sick of hearing from me