All about diesel engine oils

nitrous · 9th November 2010, 13:40

Quote:

Originally Posted by 2500cc

I was always using Mobil Delvac for my Bolero, however, this time i changed the mech and he suggested using 10W40 Castrol Edge. Is this any good ?

I don't think Castrol EDGE is available in the grade you've mentioned.
But, the Castrol magnatec does come in the 10W40 avatar. And it's an oil for petrol engines.
Stick to Mobil Delvac MX.

2500cc · 9th November 2010, 13:51

Thank you Nitrous, It was a Golden colored 5-ltr can. However, since it is already running with that engine oil, what would you suggest ?
1. Flush the engine and get back to Mobil, or
2. is it OK if i run on castrol for this time and change it to Mobil at the next 5k service ?

Cheers,
Rajesh

nitrous · 9th November 2010, 14:37

If its a golden colored can, it should be the EDGE which is fully synthetic.
Can you post a picture of the can?
How much did it cost?

You can go ahead and use it. No issues. Change it after 5,000 kms.

tsk1979 · 9th November 2010, 14:40

Castrol EDGE may be a great oil for Petrol cars, but for Diesel it meets API-CF4 specifications, which are pretty outdated.
If you have a CRDI, I would recommend using atleast API-CH4 engine oils.
Even if you have a non common rail engine, using a higher grade diesel oil (API-CH4 or higher) will protect your engine better, as the diesel available now has low sulfur content, and can therefore shorten engine life.
Using a higher grade engine oil will protect your engine.

Synthetic engine oils designed for Diesel engines do exist (API-CI4 grades also available), but they are rare.

2500cc · 9th November 2010, 14:46

@Nitrous: Unfortunately I dont have the picture of the can, it paid around 380/ltr. I dont think it is synthetic, read somewhere that Sysnthetic costs 1000 + ? ltr. Please clarify :(

@tsk: I have IDI Bolero. I was always using Mobil, but this mech to whom i went this time has some tie up with Castrol, so went per his suggestion (Om Sai Motors, Near Cosmos Mall).

sumannandy · 23rd December 2010, 18:53

Can I top up with API CI4 Mobil Delvac MX if the existing engine oil is API CH4 Castrol GTX Diesel? I am going for a trip tomorrow and just noticed the oil level is little low (between high and low). I have a can of Mobil delvac MX which I could use for top up. The engine has run approximately 5.5k after the last oil change. Thanks.

Jaggu · 23rd December 2010, 19:02

Technically you can and practically no harm should be done ^^^ but ideally avoid mixing oils.

sumannandy · 1st January 2011, 00:45

Quote:

Originally Posted by tsk1979

A note of caution, while the Delvac MX API-CI is one of the best engine oils out there, its detergent content is high. So if your car has done 90-100,000kms and you have never used a high detergent content oil, there may be trouble with leaky seals

Based on the recommendation in this forum I changed my engine oil to Mobil Delvac MX. My car has run 92k+. I was using Castrol GTX diesel earlier (company recommended oil).

Is it okay to keep Mobil Delvac MX or should I change it back to Castrol GTX diesel?

Also, what exactly is this oil seal leakage? How expensive is it to repair?

condor · 1st January 2011, 09:20

Quote:

Originally Posted by tsk1979

.. if your car has done 90-100,000kms and you have never used a high detergent content oil, there may be trouble with leaky seals

@TSK, I'm not clear about your above point :
1. how does the higher detergent affect the seals ?
2. In other words, does using high detergent oil (well) before the 90000's not affect the seals later ?
3. Or, does such oil affect only leaky seals ?

mercedised · 1st January 2011, 12:54

Quote:

Originally Posted by condor

@TSK, I'm not clear about your above point :
1. how does the higher detergent affect the seals ?
2. In other words, does using high detergent oil (well) before the 90000's not affect the seals later ?
3. Or, does such oil affect only leaky seals ?

1) By removing carbon deposits deposited on the edges of seals which prevent further deteriorating of seals, by using high detergents the carbon is removed and if seals are not in good condition the oil will leak.

2) Yes, if you are using those oils from 20-30K then the carbon deposition will not be as much on the seals, thereby you will know the actual life of the seals.

3) Leaky seals does'nt need any further detergent, they will leak whether high-deter. oil used or not.

Above points might need some corrections.

Ravi Yadav · 1st January 2011, 19:31

Just completed 1300 Km and would like to get the oil changed. The owner manual specifies "oils with performance level API CD CC MCPD2" .The vehicle in question is a Palio Multijet.
Which mineral oil would be the best for the change.

sumannandy · 1st January 2011, 23:25

Quote:

Originally Posted by sumannandy

Based on the recommendation in this forum I changed my engine oil to Mobil Delvac MX. My car has run 92k+. I was using Castrol GTX diesel earlier (company recommended oil).

Is it okay to keep Mobil Delvac MX or should I change it back to Castrol GTX diesel?

Also, what exactly is this oil seal leakage? How expensive is it to repair?

Help please. Should I change the oil immediately or continue using it?

tsk1979 · 3rd January 2011, 11:21

Since your vehicle is running fine with Delvac, keep using it!

sumannandy · 3rd January 2011, 20:05

Awesome, thank you.

OT: I thought you might be out for some trip. It is snowing in North India.

Eddy · 3rd January 2011, 20:31

Its oil change time. Delo has shut shop in India and Mobil Delvac MX is not available anywhere. Car has run 90,000 kms.

What are the other diesel engine oils (mineral) with CI rating ?

9th November 2010, 13:51	#497
2500cc BHPian Join Date: Feb 2010 Location: Bangalore Posts: 739 Thanked: 354 Times	Thank you Nitrous, It was a Golden colored 5-ltr can. However, since it is already running with that engine oil, what would you suggest ? 1. Flush the engine and get back to Mobil, or 2. is it OK if i run on castrol for this time and change it to Mobil at the next 5k service ? Cheers, Rajesh
	() Thanks

9th November 2010, 14:37	#498
nitrous Senior - BHPian Join Date: May 2004 Location: UAE/Lon/Madras Posts: 6,964 Thanked: 333 Times View My Garage	If its a golden colored can, it should be the EDGE which is fully synthetic. Can you post a picture of the can? How much did it cost? You can go ahead and use it. No issues. Change it after 5,000 kms.
	() Thanks

9th November 2010, 14:40	#499
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,688 Thanked: 23,494 Times View My Garage	Castrol EDGE may be a great oil for Petrol cars, but for Diesel it meets API-CF4 specifications, which are pretty outdated. If you have a CRDI, I would recommend using atleast API-CH4 engine oils. Even if you have a non common rail engine, using a higher grade diesel oil (API-CH4 or higher) will protect your engine better, as the diesel available now has low sulfur content, and can therefore shorten engine life. Using a higher grade engine oil will protect your engine. Synthetic engine oils designed for Diesel engines do exist (API-CI4 grades also available), but they are rare.
	() Thanks

9th November 2010, 14:46	#500
2500cc BHPian Join Date: Feb 2010 Location: Bangalore Posts: 739 Thanked: 354 Times	@Nitrous: Unfortunately I dont have the picture of the can, it paid around 380/ltr. I dont think it is synthetic, read somewhere that Sysnthetic costs 1000 + ? ltr. Please clarify :( @tsk: I have IDI Bolero. I was always using Mobil, but this mech to whom i went this time has some tie up with Castrol, so went per his suggestion (Om Sai Motors, Near Cosmos Mall).
	() Thanks

23rd December 2010, 18:53	#501
sumannandy BHPian Join Date: Nov 2009 Location: Bangalore Posts: 845 Thanked: 997 Times View My Garage	re: All about diesel engine oils Can I top up with API CI4 Mobil Delvac MX if the existing engine oil is API CH4 Castrol GTX Diesel? I am going for a trip tomorrow and just noticed the oil level is little low (between high and low). I have a can of Mobil delvac MX which I could use for top up. The engine has run approximately 5.5k after the last oil change. Thanks.
	() Thanks

23rd December 2010, 19:02	#502
Jaggu Team-BHP Support Join Date: May 2004 Location: Bangalore Posts: 20,379 Thanked: 17,320 Times	re: All about diesel engine oils Technically you can and practically no harm should be done ^^^ but ideally avoid mixing oils.
	() Thanks

1st January 2011, 19:31	#506
Ravi Yadav BHPian Join Date: Mar 2007 Location: UP-15 Posts: 146 Thanked: 12 Times	re: All about diesel engine oils Just completed 1300 Km and would like to get the oil changed. The owner manual specifies "oils with performance level API CD CC MCPD2" .The vehicle in question is a Palio Multijet. Which mineral oil would be the best for the change.
	() Thanks

3rd January 2011, 11:21	#508
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: San Jose, CA Posts: 23,688 Thanked: 23,494 Times View My Garage	re: All about diesel engine oils Since your vehicle is running fine with Delvac, keep using it!
	() Thanks

3rd January 2011, 20:05	#509
sumannandy BHPian Join Date: Nov 2009 Location: Bangalore Posts: 845 Thanked: 997 Times View My Garage	re: All about diesel engine oils Awesome, thank you. OT: I thought you might be out for some trip. It is snowing in North India.
	() Thanks

3rd January 2011, 20:31	#510
Eddy Team-BHP Support Join Date: Apr 2007 Location: Singapore Posts: 9,576 Thanked: 14,588 Times	re: All about diesel engine oils Its oil change time. Delo has shut shop in India and Mobil Delvac MX is not available anywhere. Car has run 90,000 kms. What are the other diesel engine oils (mineral) with CI rating ?
	() Thanks