[chaudh2s]

SN/CF doesn't matter as long as it is complaint to ACEA A3/B4 which it is. My Gi10 Diesel user manual specifies CH-4 or B4 as a minimum. It's difficult or rather impossible to source a fully synthetic CH-4 in India. So, went with B4, which is what the HASS guys also use for their optional synthetic oil.

[hserus]

Originally Posted by chaudh2s

SN/CF doesn't matter as long as it is complaint to ACEA A3/B4 which it is. My Gi10 Diesel user manual specifies CH-4 or B4 as a minimum. It's difficult or rather impossible to source a fully synthetic CH-4 in India. So, went with B4, which is what the HASS guys also use for their optional synthetic oil.

Fully synthetic CI4 is available in Mobil Delvac and Amsoil has fully synthetic CK4 rated oil.

Also if your manual specifies at least CH4 you're better off using a mineral CH4 and changing more frequently than you would be using a synthetic CF

Anyway you do have synthetic diesel oils of better than the required spec..

[Sebring]

I am of the opinion that semi-synth is good for 7500 Kms. But Tata Nexon uses semi-synth (Mobil/Castrol/Petronas) and has a 15,000 Kms drain period. This has left me perplexed. Even on all Nexon forums, this question keeps popping up. The dealers refuse to use fully synthetic and insist on Company mentioned drain period.

Originally Posted by hserus

Those are Semi-Synthetic oils which will last at most 7500 km. And while you can run full synthetics for longer drain intervals you had better not. Change at 10-11k.

[hserus]

Originally Posted by Sebring

I am of the opinion that semi-synth is good for 7500 Kms. But Tata Nexon uses semi-synth (Mobil/Castrol/Petronas) and has a 15,000 Kms drain period. This has left me perplexed. Even on all Nexon forums, this question keeps popping up. The dealers refuse to use fully synthetic and insist on Company mentioned drain period.

Cabbies hate changing oil early. And want cheap oil. Dealers get a good margin from oil sales and will resist attempts to bring your own oil. So, Tata cars belching black smoke due to overly old oil and sludgy engines is going to be a regular sight.

Just run the Tata semi synthetic for about 5k km and then fill with fully synthetic for the remaining 10k you can do this at any garage you like. Change the aircon filter as well.

[Traveler]

I have a query and hope to get it answered by experts here. My Pajero SFX 2.8 has 10w30 API classification CD mentioned in the owners manual. Does it make any sense to use synthetic oil for my vehicle. The engine has done 1L kms and I have changed oil at every 5k kms throughout till now. I used Mobil Super 10w30 till about 60K kms and then switched to Agip 5w30. Haven't ever seen a marked difference in engine smoothness or fuel efficiency between the two oils. The Agip however remains smooth for longer and even at 5k kms when I change it the engine is pretty smooth.

Now my question is whether such old school engines (IDI) would benefit from the use of synthetic oil.

Secondly is it even safe to use synthetic now when the engine is at 1L kms.

Having said that the engine does seem to be in excellent shape and the vehicle pulls like a train, there is no oil consumption, starts in half self and there is no smoke whatsoever.

Experts please provide your thoughts.

[hserus]

Originally Posted by Traveler

I have a query and hope to get it answered by experts here. My Pajero SFX 2.8 has 10w30 API classification CD mentioned in the owners manual. Does it make any sense to use synthetic oil for my vehicle. The engine has done 1L kms and I have changed oil at every 5k kms throughout till now.

CD is a really old classification. Just use a good mineral diesel oil like Shell Rimula T5 which comes in 10W30 and is CI4 (so 5 standards above CD .. the latest is CK but the only CK around is Synthetic).

https://www.amazon.in/Shell-Rimula-T...s=10w30+diesel

Don't buy engine oils on Amazon, they try to ship them by air and it is chaos.

[Traveler]

Originally Posted by hserus

CD is a really old classification. Just use a good mineral diesel oil like Shell Rimula T5 which comes in 10W30 and is CI4 (so 5 standards above CD .. the latest is CK but the only CK around is Synthetic).

https://www.amazon.in/Shell-Rimula-T...s=10w30+diesel

Don't buy engine oils on Amazon, they try to ship them by air and it is chaos.

Thanks for your inputs. So synthetic would not really be of any use in such a scenario?

[hserus]

Originally Posted by Traveler

Thanks for your inputs. So synthetic would not really be of any use in such a scenario?

A good diesel synthetic won't do any harm. You can surely try it.

However there's currently no good 5w30 diesel out there in the market. Only 5w40 weight ones.

5w30 oils dedicated to Diesel exist but I don't see them available in India. The usual brands are Amsoil 5w30 (they currently have a 5w30 but it is better for petrol cars), Mobil Delvac 1, Shell Rotella

[Traveler]

Originally Posted by hserus

A good diesel synthetic won't do any harm. You can surely try it.

However there's currently no good 5w30 diesel out there in the market. Only 5w40 weight ones.

5w30 oils dedicated to Diesel exist but I don't see them available in India. The usual brands are Amsoil 5w30 (they currently have a 5w30 but it is better for petrol cars), Mobil Delvac 1, Shell Rotella

Thanks a lot. I will try to get the oil you mentioned. I religiously change the oil at 5k in any case and will increase the interval if I find synthetic someday. Thanks once again.

[hserus]

Originally Posted by Traveler

Thanks a lot. I will try to get the oil you mentioned. I religiously change the oil at 5k in any case and will increase the interval if I find synthetic someday. Thanks once again.

Just get the Rimula 10W30 - you should be able to push it a bit beyond 5K with this oil. Anyway it will be a vast improvement over the oils you mention.

But wait, you said you got AGIP 5w30? That's full synthetic. Where'd you procure it from, I haven't seen it in the Indian market?

Is it this one? A decent CJ4 diesel 5w30. https://www.transdiesel.com/app_docs...E%205W-30).pdf

[Traveler]

Originally Posted by hserus

Just get the Rimula 10W30 - you should be able to push it a bit beyond 5K with this oil. Anyway it will be a vast improvement over the oils you mention.

But wait, you said you got AGIP 5w30? That's full synthetic. Where'd you procure it from, I haven't seen it in the Indian market?

Is it this one? A decent CJ4 diesel 5w30. https://www.transdiesel.com/app_docs...E%205W-30).pdf

Agip 5w30 is available here for about 2 years now. I procure it directly from their distributor Orion Motors in Bangalore. The box definitely says its Synthetic but I am not sure if it is a hybrid or fully pure synthetic. It is also listed on their site at the following URL. http://www.aparlubricants.com/?page_id=222

The product is called i-Sint Levo IN, Sae 5w30 API SM/CF.

[hserus]

Originally Posted by Traveler

Agip 5w30 is available here for about 2 years now. I procure it directly from their distributor Orion Motors in Bangalore. The box definitely says its Synthetic but I am not sure if it is a hybrid or fully pure synthetic. It is also listed on their site at the following URL. http://www.aparlubricants.com/?page_id=222

The product is called i-Sint Levo IN, Sae 5w30 API SM/CF.

That is a generic if older petrol + diesel type oil, SM/CF (the S series of standards are petrol and C are diesel, for Spark and Compression engines)

As your car requires CD this should be quite adequate and last closer to 10k (though check at around 7500 or so).

This is superb though it is a 15w40 - and dedicated diesel spec.

I wouldn't use it though given you need a 10w30 oil so the 5w30 should work. Else plenty of other 5w30 petrol / diesel type oils in Shell, Mobil etc. Use any of them.

i-Sigma Performance Synthetic IN
SAE 15W-40 • API CI-4/CH-4/CG-4/CF-4/CF • MB 228.3 , MTU Type 2 Volvo VDS-3, Caterpillar ECF-1-a/ECF-2 Cummins 20076/77/78

[Kosfactor]

Originally Posted by Traveler

I have a query and hope to get it answered by experts here. My Pajero SFX 2.8 has 10w30 API classification CD mentioned in the owners manual. Does it make any sense to use synthetic oil for my vehicle. The engine has done 1L kms and I have changed oil at every 5k kms throughout till now. I used Mobil Super 10w30 till about 60K kms and then switched to Agip 5w30. Haven't ever seen a marked difference in engine smoothness or fuel efficiency between the two oils. The Agip however remains smooth for longer and even at 5k kms when I change it the engine is pretty smooth.

Now my question is whether such old school engines (IDI) would benefit from the use of synthetic oil.

Secondly is it even safe to use synthetic now when the engine is at 1L kms.

Having said that the engine does seem to be in excellent shape and the vehicle pulls like a train, there is no oil consumption, starts in half self and there is no smoke whatsoever.

Experts please provide your thoughts.

Hello Traveler,

If your oil change interval is 5K Kms, Its better to use whatever the manufacturer recommends, its not a high drain interval and they would have taken ownership costs into account (dont that engine need a lot of oil?) while suggesting the oil grade and brand, stick to it and you should be good.

A big engine like that is hardly awake for most of the driving that we do, not much strain and thats a good thing.

Synthetics and Semi synthetics are appropriate for longer drain intervals (20K).

I have observed that manufactures design the service intervals in a way that along with oil change a bunch of other inspections \ replacements \ adjustments will also be scheduled, changing oil change intervals would mean that you may miss out on these as well.

A shorter drain period like this can in fact make the car last a lot longer, it gets periodically inspected as well.

I know of people who change to synthetics and then refuse to service the car as per schedule because the synthetic is supposed to last longer. Keep it simple.

Hope this helps.

[hserus]

Use a better grade of mineral by all means and still change at 5k kilometers. It won't hurt your car for sure. Of course regular inspections and service as per maintenance cycles are necessary.

[Traveler]

I guess i will stick to mineral only and keep the 5k interval only. Thats what i have been following till date as well. Agip 5w30 seems to be doing a good job.