[shandilyapiyush]

Originally Posted by shankar.balan

This is the oil that Maruti uses or is supposed to use, for petrol vehicles, in their authorised service centres. Engine oil and gearbox oil.
This is what they have filled in my Gypsy these last two years every Feb/ March - I follow the annual service regimen irrespective of the Km’s run.

The Shell Helix 5 pictured is not a fully synthetic oil if I'm not mistaken. I recently got my gear oil changed and they used the same Shell Spirax in 75w90.

Originally Posted by MT_Hyderabad

Switching back to 5w30 or even 0w20 will not be a problem if the engine is in good health.

As yours is a petrol and you are looking for some significant improvement in mileage, try any good brand 0w20 or 5w30 oil. If your car is fully loaded with passengers mostly, do not go down to 0w20.

Please note, all you are looking for is 0.5 to 2% gain in mileage which will not show anything significant in tankful method. It will only show in your annual consumption.

If you use 1000 litres fuel annually, you may use 990 litres this time around for the same distance.

I've never seen the internals of my engine cause it's never been opened, but maintenance has never skimped on, oil changes at correct drain intervals specified and annual service if the kilometers covered isn't 10k. I've always used fully synthetic. So I'd safely assume the engine is healthy(?)

Even if not for a marginal increase in FE numbers, I'd like to know if a w30 oil would give me significant improvement in terms of acceleration and responsiveness of the engine. If not, would sticking to 5w40 be the better choice?

Originally Posted by hserus

I haven't seen 5w30 hurt any old or newer petrol engine, least of all the old Maruti F8D. However, the cheaper and older specs of oil are just fine for such vintage engines as well. My father had a 1990s vintage M800 for nearly 20 years and it ran butter smooth on plain old 20w50, and it ran just as smooth when it was 18 years old (but barely 50k km run) and on shell 5w30.

What about critical oil seals giving up and oil leakage issues like Leoshashi mentioned might take place?

Originally Posted by hserus

So going to 5w40 from 5w30 after 80k km seems quite doable.

Would this give out any louder mechanical clatter from the engine?
Would you recommend the switch back to 5w30 or just stick to 5w40?

Originally Posted by shandilyapiyush

If i were to stick to the 5w40 grade, I'd like to change from what the ASC uses and explore other oils - Castrol Edge, Shell Helix Ultra or Liqui Moly Molygen all in the 5w40 grade.

Pretty keen on trying Liqui Moly as I've a heard a lot of good things about it!

Would the Liqui Moly Molygen 5w40 (https://www.amazon.in/Liqui-Moly-Molygen-Generation-Synthetic/dp/B078H8B2YR/ref=d_pd_sbs_sccl_2_2/262-9766399-4108650?pd_rd_w=pyIci&content-id=amzn1.sym.fa697102-547e-425b-bc67-26478c036f29&pf_rd_p=fa697102-547e-425b-bc67-26478c036f29&pf_rd_r=24628JHDKF8V3X40A8HB&pd_rd_wg =PZiuO&pd_rd_r=4e844b73-a1c7-4dbf-87f3-9946cd8dbc2e&=B078H8B2YR&psc=1)
Thank you,
Piyush

Also would Liqui Moly engine oil be a good choice? In case I switch back to 5w30 the fluorescent green under a UV light should help detect oil leaks if any I suppose?


In summary would it be better to stick 5w40 or change back to 5w30? I'm okay to not see a better FE number but in a dilemma if the performance benefit from a w30 oil would justify switching back and maybe risking a few new issues?

Again, all inputs and opinions regarding the same would be extremely helpful!

Thank you,
Piyush

[hserus]

Helix HX5 is high grade mineral

You would typically find somewhat more responsiveness and smoothness with a 5w30 synthetic, if only because of a superior additive package

Why do you worry about oil leaks if your engine is serviced regularly? In an old car where the seal or packing fails, any oil leak will be visible to the eye, no need of any UV light

You won't even need a fancy overpriced oil like Liqui Moly with a ton of additives in it. Plain old Castrol Magnatec / Mobil Super 3000 etc will give you a world of difference from what you're currently using.

Originally Posted by shandilyapiyush

The Shell Helix 5 pictured is not a fully synthetic oil if I'm not mistaken. I recently got my gear oil changed and they used the same Shell Spirax in 75w90.

Even if not for a marginal increase in FE numbers, I'd like to know if a w30 oil would give me significant improvement in terms of acceleration and responsiveness of the engine. If not, would sticking to 5w40 be the better choice?

[MT_Hyderabad]

Originally Posted by shandilyapiyush

In summary would it be better to stick 5w40 or change back to 5w30? I'm okay to not see a better FE number but in a dilemma if the performance benefit from a w30 oil would justify switching back and maybe risking a few new issues?

Again, all inputs and opinions regarding the same would be extremely helpful!

Thank you,
Piyush

There will be no performance upgrade if you are using a good 5w40 oil.
With thinner oils, you will have slightly higher engine noise, slightly more FE, slightly more peppiness during cold starts and that's it.

Try 5w40 FS oil from Mobil or Total and see if things improve. We have to experience it ourselves as different cars and different drivers make the oil behave differently.

If you want significant performance benefits, play with fuel additives, air filter and spark plugs.

[hserus]

On another topic,

https://www.autocarpro.in/news/brake...d-revia-114848

They have a 15w40 CK4 for instance besides 5w30 / 5w40 / 20w50 grades.

Advanced additives in Revia engine oil like HyperZDP technology for passenger cars and turbo boosters for commercial vehicles, boosts engine longevity and performance.

HyperZDP is from Lubrizol, a world leader in additives. A somewhat older additive package (and probably ZDDP zinc dialkyldithiophosphate, from the name) but it should be quite robust given its pedigree.

Found this ppt about HyperZDP online

https://www.scribd.com/document/1228...tem-Powerpoint

[sagarpadaki]

Is the API-CK4 specification meant for BS6 diesels? Castrol CRB Turbomax is available in API CI4+ and API CK4 variants with the latter available only in 10L can and bit more expensive per litre compared to the CPI CI4+ variant. My i20 oil change is due in another 1.5k kms and was wondering if I should stick to CI4+ or try CK4. The engine oil spec specified by manufacturer is CH4. SO the CI4+ is already an over-specced oil. Wondering if CK4 would be an overkill with no noticeable difference in performance

[hserus]

CK4 is fully backwards compatible with older specs like CH4 / CI4 etc, no worries.

For any engine use what specific grade of oil your manufacturer tells you to use, if that is CH4 then you can freely use CK4

For CI4+ try Mobil Delvac MX or Shell Rimula R4

Older spec but excellent mineral oils. If you want synthetic CK4 there’s Amsoil 5w40 Turbo Truck.

Originally Posted by sagarpadaki

Is the API-CK4 specification meant for BS6 diesels? Castrol CRB Turbomax is available in API CI4+ and API CK4 variants with the latter available only in 10L can and bit more expensive per litre compared to the CPI CI4+ variant. My i20 oil change is due in another 1.5k kms and was wondering if I should stick to CI4+ or try CK4. The engine oil spec specified by manufacturer is CH4. SO the CI4+ is already an over-specced oil. Wondering if CK4 would be an overkill with no noticeable difference in performance

[MT_Hyderabad]

Originally Posted by sagarpadaki

My i20 oil change is due in another 1.5k kms and was wondering if I should stick to CI4+ or try CK4. The engine oil spec specified by manufacturer is CH4

Although latest spec is backward compatible, but my experience says that it is better to use the specified grade. Theoretically, the more advanced the spec, the better base oil it will demand, however, there is also a possibility that we get lesser oil% and more additive% in the recent spec. These additives could be dispersants that allow extended drain intervals but do nothing for lubrication.

I used CI4 and CI4+ oils from reputed brands in my 2010 Safari Dicor, but the best smoothness I got in the vehicle was from CH4 grade oils from Mobil and Servo (the the best, totally unexpected but true). A roughly 250/litre oil beating 500/liter advanced oil was unexpected for me at least.

[hserus]

Originally Posted by MT_Hyderabad

I used CI4 and CI4+ oils from reputed brands in my 2010 Safari Dicor, but the best smoothness I got in the vehicle was from CH4 grade oils from Mobil and Servo (the the best, totally unexpected but true). A roughly 250/litre oil beating 500/liter advanced oil was unexpected for me at least.

Servo has quite good oils - including their Futura 5w30 a5b5, hidden gem.

Also BP Mak and HP Milcy. Well above average quality.

Check these out

https://www.hplubricants.in/products...lcy-turbo-gen6 - CK4 / ACEA E9 mineral

https://www.hplubricants.in/products...-neosynth-gen6 - API SN+ and ACEA C2 (so suitable for both petrol and diesel)

[MT_Hyderabad]

Originally Posted by hserus

Servo has quite good oils - including their Futura 5w30 a5b5, hidden gem.

Also BP Mak and HP Milcy. Well above average quality.

I do not have a heart to try an FS oil in the Safari as the sump is 7.5 Liters. I did try HP MILCY CI4+ oil, but it was not as good as Mobil TM Genuine CH4 or Servo Pride CH4 shown above.

Tomorrow, will be taking both my cars for oil service, Safari Dicor gets the remaining 7.5 litres from the above can and Ciaz Petrol gets the Mobil 3000 X1 FS oil.

[hserus]

Originally Posted by MT_Hyderabad

I do not have a heart to try an FS oil in the Safari as the sump is 7.5 Liters. I did try HP MILCY CI4+ oil, but it was not as good as Mobil TM Genuine CH4 or Servo Pride CH4 shown above.

Tomorrow, will be taking both my cars for oil service, Safari Dicor gets the remaining 7.5 litres from the above can and Ciaz Petrol gets the Mobil 3000 X1 FS oil.

In future, try getting hold of the green bottle Maximile FEO (Mahindra OEM oil). Semi synthetic 5w30 and it is excellent for just about every CRDI SUV engine.

Quite reasonably priced and easily available.

[MT_Hyderabad]

Originally Posted by hserus

In future, try getting hold of the green bottle Maximile FEO (Mahindra OEM oil). Semi synthetic 5w30 and it is excellent for just about every CRDI SUV engine.

Quite reasonably priced and easily available.

I never thought that my car can gulp 5w30. It was not mentioned on the manual and more recent Dicor engine cars like Safari Storme also prescribes 15w40 (with 15 k interval). Do you think a 5w30 will fly?

[hserus]

Originally Posted by MT_Hyderabad

I never thought that my car can gulp 5w30. It was not mentioned on the manual and more recent Dicor engine cars like Safari Storme also prescribes 15w40 (with 15 k interval). Do you think a 5w30 will fly?

Any light crdi diesel won’t be hurt by a 5w30 or 5w40 a3b4 / a5b5 / c2 / c3 oil. Besides your safari’s varicor and dicor, as well as the Mahindra Mhawk, are close cousins, developed by AVL Austria.

Besides consider that the Endeavour and Fortuner use 5w30 a5b5 but the manual at least for Endy also says 15w40 is fine.

I looked up the Ford Transit Connect on the Amsoil US website (it uses the same 3.2 diesel) and saw this.

This is interesting. I am on the amsoil US website and for the ford transit connect (which has a 3.2 litre duratorq diesel engine like our endy) I get this reco for engine oil

Viscosity 0W-30, 0W-40 (All TEMPS) - For the use of biodiesel fuel (B6 - B20) use SAE 5W-40 API CJ-4.
5W-30, 5W-40 (Above -29) - For the use of biodiesel fuel (B6 - B20) use SAE 5W-40 API CJ-4.

So for our hot weather we can certainly use 5w30. But for biodiesel fuel - which a lot of India will soon start seeing - they are saying go to a diesel specific engine oil (CJ4).

So .. there are synthetic as well as mineral CK4 in the market in good amounts now including from the sarkari oil majors. Should be worth filling in the Endy (or any other large diesel such as fortuner) especially if fuel quality is adulterated, either officially by govt with "bio diesel" or unofficially by our various petrol pump owners

[hyper-VTEC]

I've been using Amsoil Turbo Truck 5w40 from last 4 oil fills in my 2014 Safari Storme run 57K Kms. However, the truck's running has decreased considerably to around ~5K kms annually.

The truck is used mainly in Bangalore city and occasional highway runs (150-200 kms).

Would it be okay to switch back to good quality mineral 15W40? In addition to the saved cost (7.5 Litres), i am feeling that Amsoil is being wasted since it not getting utilised to its true potential.

What are the possible downsides to going back to mineral? I am expecting it to be less smooth and FE to go down a little. Other than that any major issues i can encounter? I plan to keep the Storme till EoL.

[hserus]

Your Storme will do just fine on 15w40 mineral, or on some synthetic or semi synthetic 5w30 or 5w40. Not much downside.

I used to use Amsoil a lot but then my running is like 30k a year. For 4-5k km a year short runs, Amsoil is way overkill.

Try Maximile FEO as I said, if you have a Mahindra parts dealer near you.

Originally Posted by hyper-VTEC

I've been using Amsoil Turbo Truck 5w40 from last 4 oil fills in my 2014 Safari Storme run 57K Kms. However, the truck's running has decreased considerably to around ~5K kms annually.

Would it be okay to switch back to good quality mineral 15W40? In addition to the saved cost (7.5 Litres), i am feeling that Amsoil is being wasted since it not getting utilised to its true potential.

[RahulRV]

Hello members,
I have been getting my 2017 Baleno RS 1.0 serviced regularly by Nexa. In all the services they have used MGO 5W-30 (shell) engine oil. Few people outside Tbhp have said Amsoil signature series is fantastic and it’s worth trying. The one I currently have is also Fully synthetic oil as well. Will there be such a huge difference or is it better to stick on to MGO oil/ Shell 5W-30. Also, Amsoil is more expensive than shell by ₹1300.
Also, does it make sense to have fully synthetic oil as my yearly usage is max 9000KM.