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Old 11th February 2009, 17:37   #1
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Default CNG Oil Change - Regular or any CNG specials?

hi guys,

its time to change the engine oil of my Indica CNG.. went to IBP pump recently and saw a "special" engine oil for CNG driven vehicles placed in the racks. never had the time to look into it, but there was nothing special.

so, any regular semi-synthetic oil would do (I prefer mobil) or there is some special kind of oil required for CNG engines?

any inputs?
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Old 11th February 2009, 17:44   #2
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Regularly using Castrol Magnatec, so far so good !!
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Old 11th February 2009, 18:00   #3
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Thanks ash.. i too think it wouldn't make much of a difference!
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Old 12th February 2009, 01:01   #4
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Using regular castrol magnatec oil in my baleno CNG
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Old 6th January 2011, 21:50   #5
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Default Re: CNG Oil Change - Regular or any CNG specials?

oil with additives to control additional nitration and oxidation due to cng in petrol engine ought to be used instead of a regular oil. unfortunately in india since cng is dominently used by taxis / transport vehicles etc. ( who naturally want to use the cheapest oil possible ) its not possible to get a SJ /SM /SL API rated oil specially formulated for cng vehicles.
The best rating available is probly API SF. ( Not even SG ) which is serious degrading of engine oil required for any newer gen. gasoline engine.
So in case you happen to use a CNG special , make sure you atleast use the required grade and reduce the drain interval ( say 5000 km NO MATTER what the pundits say about cng prolonging engine oil life and all. )
It may not be pumping so much carbon into the oil as petrol , but the extra heat, loss of lubricity , lean air flow shall surely cause degradation of the additives effectively reducing engine life.
I have faced this dilemna in both my cars running on gas -accent 1.5 on lpg and logan 1.6 on cng.
Have even used the HP gasolene to semi synthetic / synthetic blends and believe me they all appear equally worse for wear at the end of 5/6 k.
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Old 20th May 2016, 11:56   #6
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Default Re: CNG Oil Change - Regular or any CNG specials?

Yesterday, I bought Mobil 20w50 for Santro CNG which has clocked about 130k kms. On the label it say, specifically for CNG/LPG cars. Now I'm a bit hesitant to use 20w50, normally I have been using 5w30 oil grade.

Any suggestions are welcome .

Many thanks
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