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Car engine oil leak from car bottom, oil sump was half empty, xado or ceratec will help?

Hi Experts,

My diesel car engine oil was leaking from bottom which I realized very late. I changed engine oil to shell semi synthetic. After that I asked mechanic to fix oil sump screw properly. I did not change oil filter as it was not available that time. Mechanic said you can always change later and will not be a problem.

After that I was noticing loss of power in all gear shifting. Prior to this oil change car was making sound, vibrations were more. This diesel Grande Punto has 60k miles on it. Engine oil is still leaking drop by drop, car servicing is already due, I am wondering if products like xado or ceratec will help? may be car engine is worned out a bit. This car is 3 year old and was bought brand new.
When car was new for 2 years I did proper servicing but on 3rd year I used shell full synthetic engine oil from outside during servicing.

The car engine never ceased even though oil sump was more than half empty.
I am also planning to change engine oil to Liqui Moly semi/full not decided yet which one.

I am trying to get suggestions before I go to service center.

Do you guys have any experience on below products?

Xado

https://www.amazon.com/XADO-Maximum-atomic-conditioner-Bottle/dp/B004TMP18G/ref=sr_1_1?ie=UTF8&qid=1468761657&sr=8-1&keywords=Xado

Ceratec

https://www.amazon.com/Liqui-Moly-20002-Friction-Modifier/dp/B001CZODH8/ref=sr_1_1?ie=UTF8&qid=1468761606&sr=8-1&keywords=Ceratec

Thanks in Advance!
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ASKER

Thanks Michael!

Before noticing this leak, last time during servicing I got drain plug (screw and circular surrounding if I am calling it correct) replaced. After that no oil leak noticed for 30 mins but later I forgot about it thinking all is well and oil leak started again after car was driven.

I think it is the same thing which could have gone bad because that is the place it is leaking again, it is drop by drop but not so fast, may be one drop every two minutes probably.

I will check about gasket this time.

What do you think about oil types 5w-40 is better or 10w-40?
FIAT recommends semi synthetic.

Apart from this, do you think running car with very low engine oil could have damaged internal parts (this happened only once on 3 year)?
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I have checked the reference link and going to check availability of it.
Obviously that I trust members here so look for help in EE than anywhere else.

Thanks Michael!
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Hi Malmensa!

Talcum powder idea is super, I never thought about it. I will try.
When you say degreaser, what product is that exactly? There are multiple products in the market for Engine cleaner, fuel tank cleaner etc.. and I know little about cars.

Thanks!
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Try the local car parts shop. There are two types of degreaser, petrochemical based and water based. Petrochemical works better. The stuff is pretty cheap. Probably one can will do, maybe two.

Go to a car wash that has a high pressure engine spray. With the car engine cooled down a bit (exhaust touchable without burning) spray degreaser over the areas covered in oil. Leave it sit a minute, then was it off with high pressure spray. (The place you go may have "engine wash" or similar, but that is usually pretty weak.)

This is the stuff I usually use; there is probably similar available where you are.

http://www.supercheapauto.com.au/online-store/products/Export-Degreaser-400g.aspx?pid=1196#Recommendations
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ASKER

Okay, thanks!

I will look for this or similar product.
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Thanks Michael for answering the questions, I appreciate it.
My sincere apologies as I was late to reply to your comment.

Thanks moderator for splitting points.
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