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[mikeh]

Hi,
Does drilling a hole in the oil filler cap also decrease the amount of smeg build-up in/on oil filler tube/cap?
My omega only gets used for short journeys now (up to 2 miles at a time twice a day). I replaced the cam cover gaskets, cleaned out the breather system and did an oil change 4 weeks ago and am already seeing a slight white trace on the tube/cap despite the warmer weather.
Thanks,
Michael.

[Lizzie_Zoom]

Hi,
Does drilling a hole in the oil filler cap also decrease the amount of smeg build-up in/on oil filler tube/cap?
My omega only gets used for short journeys now (up to 2 miles at a time twice a day). I replaced the cam cover gaskets, cleaned out the breather system and did an oil change 4 weeks ago and am already seeing a slight white trace on the tube/cap despite the warmer weather.
Thanks,
Michael.

That is your problem Michael as no petrol driven car is any good with continual short distance travels, and this is especially true of Omega's!

For the long term good of your engine, it needs a good hour's run at least once a week to ensure the engine oil is fully heated and spread around the engine.  The exhaust also needs a really good warm up to rid it of moisture and harmful fluids.  The greater the distance each run is the better, but always aim to keep your engine running continuiously for at least 20 minutes each time.  A good run at 70 (got to say that!! ) on the motorway to really blow out the cobwebs is never a bad idea either 8-) 8-)

In terms of drilling a hole in the oil filler - the answer is NO!! The Omega engine is designed like most to have set pressures being created and maintained within it, and the breather system is there to ensure, if it is well maintained, that these pressures remain balanced.  That is the only breathing system there should be

 

[mikeh]

Ok, thanks Lizzie

[Kevin Wood]

Lizzie is right. Adding a hole anywhere will introduce an air leak and may cause running problems as the breather system is a sealed system downstream of the air metering device (MAF).

Some mayo can form in the top of the engine when used for short trips. This doesn't reflect the general condition of the insides of the engine, the filler neck just happens to be an area that's not very effectively purged of moisture.

Having said that, on an engine used for short trips, regular oil changes are a good idea.

Kevin

[Welung666]

The mayo in the filler neck is because the neck is so far away from the heat of the engine it cools faster creating the mayo. If you make lots of short trips, as I was in my V6 before I sold it, I simply removed the filler neck and fitted the cap directly to the cam cover. I refitted to add oil, then removed it again. easy peasy

[mikeh]

Thanks, I'll try it without the filler neck and see if I get less mayo.

[mikeh]

Thanks Welung666. That does the trick - no mayo.