Hello does anyone know what oil i should have in my 98 sti which has what sounds to be either piston slap or noisey tappets?
car has only done 48k but was stood on a boat for two months while it came over and this noise has suddenly appeared.does go quite at 2000 rpm but thats it


any help is welcome thank u

 

motul 15/50
mobil 1 15/50
casrol rs 10/60

These are all good oils....

dan

 

Id have your car serviced and have any of the said oils put in

1. Motul 15w50 fully synth
2. Mobil 1 Motorsport 15w50 fully synth
3. Castrol 10w60 fully synth

These are the most commonly used, a thinner oil like the shell 5w30 will give you a more tappy noise from your engine, i would suggest if you use the above 3 oils that you let the car warm up for about 5 miles (so the oil is at its optimum running temp) before giving it some stick

Tony

 

thank you for your advise , i have mobil 10 40 in the car at the moment with some slick 50 as this was advised by my local, do u guys think this is ok or shall i go change it?

 

Slick 50
All i can say is get that cr@p out of your engine and put fully synthetic in there!!
As said above, use one of the 3 recommended oils given and fully synth is better than semi/mineral oil with slick nasty in.... (and shoot your local dealer who said put slick 50 in [img]images/smilies/mad.gif[/img] )

Tony

 

Have to agree with tony on this one (slick 50)

I have in the past put this in an old car of mine and after a short amount of miles the engine became very tappety. The slick 50 cleans the carbon deposits from the internal engine parts, this small build up is good for the engine and lets them run quieter...

Also the parts of carbon e.t.c cleaned off the engine internals will now circulate throughout the engine which is not good on a turbo car as it can cause problems with the turbo bearing and other things..!!

Dan

 

First thing tommorow i'll sort out the oil and arrange the hit on the dealer.....thank you for your help!!