yellow slime in engine oil can any one help?

Question

i have yellow slime in my engine oil of my car i have drained the oil and put a engine flush in to put new oil in and fillter on but it keeps coming back it's like a mustard colour on the oil cap and inside the top of the engine.my water is ok to dont no what to do is there anyone that can help thanks

Answer 1

Sounds to me like your water is mixing with your oil, which means your head gasket has probably gone. Weve just had the same problem with our car.

Answer 2

Hi



If you are not losing any water then it could be fuel mixing with your oil which is the signs of either worn bores and/or rings, or a head or head gasket problem.



Have a cylinder compression and leak down test carried out. An experienced mech will be able to tell you what the problem is from reading the compression gauge as the test is carried out.



If you are losing water then before you condemn the head or gasket, just check as to whether or not your vehicles oil cooler is water cooled. A lot of Vauxhalls are, and if the cooler O ring goes then oil and water will mix.



Look at the base of the oil filter. If there are coolant hoses coming from the base where the filter is screwed onto then you should investigate this first.



Cheers



Geordie

Answer 3

First thought is headgasket problems but if you use the car on only very short journeys then it could be just condensation making the cap sludgy



If the oil is going that way then the head gasket is the more likely candidate



Local garage would check it out for you and give you a price to repair it



Good luck

Answer 4

In increasing order of severity (and therefore cost) it could be:



Short trips allowing condensation to build up & create "mayonnaise" inside the oil filler cap & rocker cover.



Blocked crankcase ventilation valve.



Failed head gasket/warped head/cracked head.



If your coolant isn't disappearing or becoming strangely coloured, I'd suspect (and hope) it's one of the first two. A garage will be able to do a "sniff" test quickly & easily to determin if it's the head/head gasket or not.

Answer 5

Water in oil. Most likely head gasket or water jacket cracked. If you dont use it often it could just be severe condesation build up causing it.

Get it check out at garage. They will pressure check the cooling system and the engine compression for you. 10min job.

Answer 6

It's water in the oil - if there's a lot then your head gasket has gone. If there's just a bit around the oil cap then it's condensation (often happens to cars eg. on a garage forecourt that stand around for ages and then get test driven but not far enough to burn it off).

Answer 7

If you're losing coolant, and I appreciate that you say you're not, then it probably is a head gasket.......expect a hefty repair bill.......£300 is not unreasonable.

With any luck you may just need to take your car for a long hot burn on the motorway to boil out any condensation.....but don't get your hopes up too high. Sorry.

Answer 8

Water getting into oil from somewhere. Can be due to short journies, this seemed to effect older cars more than modern cars. Condensation would build up inside the engine and not get burnt off due to short journey.

Answer 9

its usually a sign of water mixing with the oil usually from a head gasket but it can also be a problem with the crank case breather which is also worth a look what kind of engine is this and it may help with the diagnoses

Answer 10

what car is it ? a ford escort /fiesta 1.3 ???? i bet...



it's just condensation from the engine not heating up before you turn it off. If your water level isn't moving - just give it a good thrashing to boil the water away...



oh yeah -= and badseed is talking rubbish. Ever heard of a 6 cylinder bmw ? or a 7mge,gte ? all alloy heads and always getting BHG's....

Answer 11

It sounds to me like one of your seals have gone and the oil and water are mixing in the engine. Sorry.

Answer 12

pretty much got all the ans above but wen i read it first thing wot came to mind is your gasket has gone?? buy some new seals first as they are cheaper to repairer than the full head!!

Answer 13

short trip driving causes condensation inside the engine, make sure your pcv valve isn't plugged up, I would put a new one on.

Answer 14

Not a mechanic, but sounds like water through cylinder head gasket to me. Can be done at home, but better at garage. Not cheap I'm afraid.

Answer 15

water leaking into oil

Answer 16

it's water.. you got it hot a while back and cracked the head.

it is not the gasket ..it is NEVER EVER the gasket. on a car with an aluminum head..

i have repaired hundreds of cars like this.. i have yet to see it be the gasket.

.if the car were older with cast iron heads then it might be a gasket.. but if it's a Honda Toyota Nissan etc..it's the head

Answer 17

Take your car to a mechanic .

Answer 18

TheBadSeed is a full of it. Aluminum head rarely crack and do warp easily, so you blow a lot of head gaskets. If you use coolant, that's a pretty good bet.

Answer 19

It sounds like your head gasket is either going or gone.

Answer 20

sound like antifreeze in the oil - happens when a head gasket starts to go bad............

Answer 21

as far as i remember that is water , you must have a gasket broken letting in water

Answer 22

cracked head or block