Best oil to reduce 'ticking' in EA82?

Tezwah · Post by **Tezwah** » Wed Oct 21, 2009 3:48 pm

I believe i have a leaky injector that is leaking fuel which is finding its way into the oil and diluting it. It's due for an oil change anyway but recently i havent been driving it very much and it has developed a tick which I think is mainly due to not being driven and the diluted oil. I'm wondering what the best oil would be to use?

phillatdarwin · Post by **phillatdarwin** » Wed Oct 21, 2009 8:22 pm

after time your oil will get thin .
i run cat diesel oil in my L and no more ticking .
if u have a leaky injector i can not see it getting in to your oil unless your rings on your engine are no good .
Has the engine got hot at some time .?

steptoe · Post by **steptoe** » Thu Oct 22, 2009 2:36 am

10W30, check timing belt tensin, wynns tune up can have some effect as well after a few hundred like 500km

Tezwah · Post by **Tezwah** » Thu Oct 22, 2009 1:49 pm

Mmmm no idea, all i know is the oil has petrol in it and the car doesnt blow any smoke. drove it for around 30 mins last night and the ticking went away anyway. must just need regular driving to keep the ticking at bay.

phillatdarwin · Post by **phillatdarwin** » Thu Oct 22, 2009 9:11 pm

i wood like to know y you had petrol in the oil and how it got in there .
How much petrol do u think was in the oil ?

Tezwah · Post by **Tezwah** » Fri Oct 23, 2009 6:27 am

mmm well I couldnt be sure but enough to make it smell like petrol..

someguy · Post by **someguy** » Fri Oct 23, 2009 6:53 am

I had the dreaded lifter tick for a while.

So I tried using thinner oil.

I went for 10w30 and from the moment I put it in my lifters went crazy...constantly.

So I drained it and went back to 20w50 and never heard them again (touch wood its been 2 months now)

steptoe · Post by **steptoe** » Fri Oct 23, 2009 7:58 am

and as philatdarwin says use a Diesel spec oil for its higher detergent package for cleaning the oily bits and keeping them clean. I have been told that once use Diesel spec oil stay with it as the next lower spec oil used it will blow smoke until piston carbon seal builds up again.

phillatdarwin · Post by **phillatdarwin** » Fri Oct 23, 2009 6:53 pm

yes u can say that but with boxer engines it is not the same as with strate up and down engines

discopotato03 · Post by **discopotato03** » Fri Oct 23, 2009 8:21 pm

I think Phill needs to think again , carbon crud doesn't seal compression and combustion pressure in . Thats what properly sealing piston rings and valve faces and seats do .

High detergent oil isn't always diesel spec oil either , years ago in the Cooper S engines I ran BP Corse Plus and that was a fairly high detergent four stroke petrol engine oil . High detergent because high performance carburetted engines with big cams get rich and dirty in the top ends and some gets past the rings and into the oil .

Diesel engine oil isn't really higher spec than many good petrol engine oils , it has different additives because they run significantly higher compression ratios and also lower combustion temperatures - also diesel fuel has a higher flash point than ULP so not quite as volatile .

I'm pretty sure I mentioned this before but if you read the labels on containers of diesel engine oil it specifically mentions that it's not recommended for cars with cat converters so it could possibly poison the catalyst rendering it useless , maybe the 02 probe as well .

A better method of cleaning an engine internally is to do two or three short oil service periods and if it continues to get crud in the oil fix whatever the problem is . As mentioned previously the genuine workshop manuals say 15W30/40/50 depending on the ambient temperature ranges the car is run in .

I'm still not convinced that sticky rocker pivots (they are NOT "lifters") is the problem . My original 300+ K EA82 only had valve train noises while there was slack in the cam belts , this was remedied once with new belts and tensioners and again after a few thousand Km by resetting the belt tensioners .

The rebuilt Vortex turbo engine had two of its pivots gutted and found to be fine , the rest were washed oiled and refitted . The oil pump was mint so it went back in with new seals etc .
About the only ticking this engine makes is its injectors opening and closing though it will get its head bolts retorqued and belt tensioners reset in the near future .

Your calls .