What qualities would be best to reduce emissions from the tailpipe? Would it simply be choosing an oil which doesn't burn off, or would using a diesel rated oil in a passenger car keep emissions lower? My car is well-tuned and in good condition, and I don't have emissions inspections, I'm just wondering if some oils minimize emissions more than others?
Emission-reducing oils?
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Well the latest SN oils are supposed to protect the I/M systems better. Thats probably not the answer you were looking for though.
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Originally Posted By: tig1
If you are talking about using a HDEO in a modern gas engine, then the higher ZDDP may be harmful for the cat. conv. The best oil for emissions would be the rated wt. called for by the engine builder and a SN oil.
Yup, what he said ^^^^
If you are talking about using a HDEO in a modern gas engine, then the higher ZDDP may be harmful for the cat. conv. The best oil for emissions would be the rated wt. called for by the engine builder and a SN oil.
Yup, what he said ^^^^
I'd think to determine this, you'd have to have an emission test done with your "current" setup "first" so you can get a base-line....
But it goes without saying, new oil is going to have less emissions than old oil...which is why most people recommend changing the oil, filter, air filter, and optionally, the spark plugs before an emission test...just to kill as many "variables" as possible...that could set off red flags for bad emission results.
That being said, I could understand Diesel Oils being more "emission friendly" being that they tend to be thicker, and more robust, less tendency to burn off....? But I think the latest/greatest "SN" oils are being manufacturered to be more emission/environmentally friendly, per "CAFE" standards.....and you may notice, if you browse the labels on the diesle oils, some still meet API "SM" ratings....due to the different additive requirements that have been changed for the "SN" formulation....
But it goes without saying, new oil is going to have less emissions than old oil...which is why most people recommend changing the oil, filter, air filter, and optionally, the spark plugs before an emission test...just to kill as many "variables" as possible...that could set off red flags for bad emission results.
That being said, I could understand Diesel Oils being more "emission friendly" being that they tend to be thicker, and more robust, less tendency to burn off....? But I think the latest/greatest "SN" oils are being manufacturered to be more emission/environmentally friendly, per "CAFE" standards.....and you may notice, if you browse the labels on the diesle oils, some still meet API "SM" ratings....due to the different additive requirements that have been changed for the "SN" formulation....
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SN is more towards fuel economy. However SN w/Resource Conserving will add more emissin system protection. API SN, when licensed with Resource Conserving, is equivalent to ILSAC GF-5. All mainly apply to 0,10,30 multigrade weights.
For other viscosities like 40 weights what you want is acea C fluids, CJ-4 fluids (the diesel oil you were talking about probably) and certain manufacturer specs like 507 from vw or others like MB.
They focus on low or medium SAPS (supfurized ash, pfosphorus and sulfur) in order to protect and prolong the life of EGR systems, cats, and diesel particulate filters.
A high HTHS, low noack would help with this as well.
For other viscosities like 40 weights what you want is acea C fluids, CJ-4 fluids (the diesel oil you were talking about probably) and certain manufacturer specs like 507 from vw or others like MB.
They focus on low or medium SAPS (supfurized ash, pfosphorus and sulfur) in order to protect and prolong the life of EGR systems, cats, and diesel particulate filters.
A high HTHS, low noack would help with this as well.
Motul's specific verbage:
Environment friendly, this type of oil allows fuel consumption reduction and therefore minimizes greenhouse gases (CO2) emissions.
Basically low friction means the motor does not have to work as hard to develop its power and hence you pollute less.
Environment friendly, this type of oil allows fuel consumption reduction and therefore minimizes greenhouse gases (CO2) emissions.
Basically low friction means the motor does not have to work as hard to develop its power and hence you pollute less.
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