Team-BHP - All about diesel engine oils

Hey All,
Feel like a noob when going through all the posts here related to oils :)
I'm planning to get my oil changed on my Ford Fiesta classic diesel. Manufacturer recommends 5w-30 but I'm keen on 5w-40.
Reason being, 40 rated well be a little more viscous and better suited for ambient temperatures we experience.
I've read through a few articles on oil grading and have come to this conclusion.
Please help correct it if it is skewed.

5w-30 operates between - 25 degrees to +30 degrees centigrade whereas 5w-40 operates between -25 degrees and +50 centigrade.
I live in Pune city where the temperature from Feb to mid June is typically between 34-45 degrees. Add another month for the October heat.

Will 5w-40 take better care of my engine considering this fact?

Insofar as oils are concerned, my heart rules over my head :uncontrol

Notwithstanding the manufacturers' specifications, I have gone beyond their recommendations!

My DDiS 200 engined SX4 has been on a diet of Mobil 1 0W/40 from day 1 (current odometer reading 98,000 km in 6.5 years); and my NEF CRDe engined Mahindra Thar has been on Mobil Delvac 1 5W/40 from 20,000 km (current odometer reading 38,000 km in 5.3 years)

It pains the wallet to buy these expensive lubricants, but the smoothness derived is priceless clap:

Question:

XUV500 Manual suggest MaxMile Crown / Maxmile Feo which "exceeds" API CH-4 SAE 15W-40

I just did an oil change on my 2014 XUV500 with Shell Helix Ultra (Full Synthetic) which is API SN/CF SAE 5W-40

According to this site: https://www.oilspecifications.org/api_eolcs.php CH superseeds CF & CF is obsolete, & the current version available is CK-4

But CK-4 is nowhere to be found anywhere online in India, the best i saw was CI-4

So have i put in the right oil for my XUV? is there anything better than the one i've put which exceeds the CH-4 specifications or is it best to just use the Mahindra Maximile Crown as suggested in the manual- not sure if it is full synthetic or not.

Quote:

Originally Posted by dreamz_mak (Post 4322003)

Question:
5W-40

I just did an oil change on my 2014 XUV500 with Shell Helix Ultra (Full Synthetic) which is API SN/CF SAE 5W-40

So have i put in the right oil for my XUV?

NO you have put CF which is lower then CH-4

Quote:

Originally Posted by dreamz_mak (Post 4322003)

is there anything better than the one i've put which exceeds the CH-4 specifications or is it best to just use the Mahindra Maximile Crown as suggested in the manual- not sure if it is full synthetic or not.

From Shell only Shell Rimula R4 is the one available in India which is CI-4+
its a mineral oil but a good oil. None of the Shell Helix Ultra synthetic oils available in Indian market meet your requirement

Castrol GTX Diesel is another CI-4 oil which you can use.

Seeing the pricing probably Mahindra is also procuring mineral CI-4 oil in bulk and branding as Mahindra Maximile. Unless you have some problem with that I see no reason to go for a lower grade synthetic oil.

Look at your service bill if GST is 18% then Mahindra oil is mineral if it is 28% it is synthetic.

Quote:

Originally Posted by dreamz_mak (Post 4322026)

So there are no CI-4 or better full synthetic oils?

If you absolutely have to have a synthetic oil, then one option is Mobil Delvac 1. It is a CI-4 5W-40 oil.

But my suggestion would be stick to 15W-40 CH4 and above mineral oils, they are good enough for 10k kms for the Mahindra mHawk engines.

Cheers,
Vikram

Quote:

Originally Posted by aerohit (Post 4322084)

Very little has been discussed about -

I believe Delvac 1 is Full Synthetic hence costlier whereas Delvac MX is mineral based hence cheaper... but i could be wrong.

also 5w would be better than 15w, similarly 0w is better than 5w. those SAE number or rating of xW is when the oil is cold / when engine is starting & the value after W represents the viscosity of oil at 100 C, it doesn't in anyway depend on ambient / outside temperatures.

Quote:

Originally Posted by dreamz_mak (Post 4322003)

Question

I just did an oil change on my 2014 XUV500 with Shell Helix Ultra (Full Synthetic) which is API SN/CF SAE 5W-40

According to this site: https://www.oilspecifications.org/api_eolcs.php CH superseeds CF & CF is obsolete, & the current version available is CK-4

But CK-4 is nowhere to be found anywhere online in India, the best i saw was CI-4

CF/CG/CH/CI/CJ are API Standards.(American)
Look for the ACEA Standards also which are European standards.

Shell Ultra is Specified for ACEA A3/B4 which makes it suitable for Diesel cars also.

If you read the ACEA standards it will put you at ease. A gist of A3/B4 is given below.

"A3, B3: high performance oil, extended intervals are possible

B4: similar to B3, but also for diesel direct-injection engines"

So the Shell Ultra you have used is perfectly fine.
There is no need to lose sleep over it.
In fact, have heard many good reviews about it.
You can go through the reviews at Amazon in

Cheers

Thank God I found this thread. Tata recommends Mobil Super 3000 TMGO 5W 30, (nobody knows what oil they have supplied from factory with my new Nexon Diesel), but its good. Service guys reckon its semi-syth. Is the oil mentioned above good for the 15K KMS service? Planning to source 5 litres from a dealer on JC Road. The other options are Petronas and Castrol which I'm not keen on.

Quote:

Originally Posted by Spotty91 (Post 4323970)

Thanks for the info, I will continue to run Shell Ultra for the next 10k service interval but wont be using it again afterwards.

As according to ACEA standards Mobil Delvac 1 is E7 / E4
https://www.mobil.com/english-us/com...-delvac-1-5w40

E4: very heavy use, longer drain intervals possible
E7: similar to E5 yet stricter test criteria

So that basically exceeds Shell Ultra as well in that standard of testing, Usually people go with what that SAE number stands for & not the rating of the oil...
If my XUV manual had suggested me to only use 5w40 irrespective of the grade of oil,i would have blindly used Shell Ultra as according to the reviews its a good oil - but with only Rs.130/ltr difference between it & the Mobil Delvac 1 I would rather get the higher grade oil which clearly here is Mobil Delvac 1