My swift 11 model is reducing engine oil. The oil cosumption is about 1.5 litres after every 5000km. . There is no snome drom engine. Oil plugs have no oil Pcv valve was cleaned. Compression test returned a reading of 155 for each cylinder. There are no issues witb power or fuel consumption. Any leads whether its weak engine or any other reason? The oil in use is 10w 40. Changed different brands but the problem persists.milage is 220k. Well maintained car
@Xulfiqar
1 litre every 5000 kms falls under normal use.
Thanksbfor yiur quick reply. Is the compression reading ok. At what level of oil consumption i shall consider the piatons are worn out. 2 liter?
Worn rings etc isnt a timed problem but rather a wear problem, there are many ways to check that, usually oil burn is caused by worn valve seals on modern engines.
Switching to a fully synthetic oil might reduce oil consumption or even possibly fix the issue.
I have always used fully synthetic oil now switched to semi sunthetic due to excessive oil burn
you are pushing 10w 40 interval that to on a weak enginereduce drain interval to 3500kms
What i reckon is that 155 is considered a good compression. If this is a sign of weak engine then i was planning to get it overhauled. But was confused that shall i go for valve seals only or rings also. Would like to overhaul it sooner than later. My doubt was on valve seals as xulfiqar also confirmed. I can go for a overhal of all items. Can i get valse seals replaced only?
@xulfifar. Your final input needed about furtger ciurse of action. Shall i get tge engine overhauled or get tge valse seals changed only. Is the 155 compression value consideerd ok?or shall i get rings changed as well.
sir how we can prevent wearing of valve seals? or if I can rephrase, what cause worn valve seals so that we can take care of that aspect.