What are the pros and cons of using diesel oil in a gasoline engine? I know diesel oils has more additives and detergents and such, but is that the only reason?
Pros and Cons of Diesel Oil in Gasoline Engine?
- Thread starter lancerplayer
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Pros: more ZDDP.
Higher initial TBN
Lower cost due to less marketing.
Cons: higher ZDDP (not good if you are a frequent oil changer and have emmissions gear, but probably not an issue if you do extended drains).
Typically only available in heavier viscosities.
May not be readily available.
May reduce MPG but, not always!
Pros contamination tolerance Cons well sometimes you can only by them by the gallon.
There is a 10-30 available, but that is the thinnest I've heard of.
Normally 15-40 or 5-40.
This is a bit thick for modern cars. Not a big deal in Summer, but cold starts in winter will suffer -flow and drag.
I think if they had a5-20 and 5-30 HD oil, everyone here would consider using it, otherwise.
Cons: spark plugs start to glow
engine sounds like rattling cans
blows black smoke
How about the magnesium additive; that is usually not in PCMO, mosy likely for a good reason. Will that Mg (?) compound cause some issues?
Originally Posted By: ARCOgraphite
How about the magnesium additive; that is usually not in PCMO, mosy likely for a good reason. Will that Mg (?) compound cause some issues?
Hi,
saaber1 - "Magnesium" is typically used as a detergent. It is being replaced in some HDEOs by the more expensive "Calcium" products
HDEOs that are not endorsed "mixed fleet" and carry dual petrol/diesel API/ACEA Quality ratings should NOT be used in petrol engines. This especially applies to those with a very high TBN due to their likely SA levels
What about SAE 30 in an older model vehicle that calls for 5w-30?
Originally Posted By: Doug Hillary
HDEOs that are not endorsed "mixed fleet" and carry dual petrol/diesel API/ACEA Quality ratings should NOT be used in petrol engines. This especially applies to those with a very high TBN due to their likely SA levels
Originally Posted By: Ben99GT
According to Horsepower TV, Rotella will cause engine sludge in a gasoline engine. 
Originally Posted By: Doug Hillary
Hi,
saaber1 - "Magnesium" is typically used as a detergent. It is being replaced in some HDEOs by the more expensive "Calcium" products
HDEOs that are not endorsed "mixed fleet" and carry dual petrol/diesel API/ACEA Quality ratings should NOT be used in petrol engines. This especially applies to those with a very high TBN due to their likely SA levels
Originally Posted By: Doug Hillary
Hi,
saaber1 - "Magnesium" is typically used as a detergent. It is being replaced in some HDEOs by the more expensive "Calcium" products
HDEOs that are not endorsed "mixed fleet" and carry dual petrol/diesel API/ACEA Quality ratings should NOT be used in petrol engines. This especially applies to those with a very high TBN due to their likely SA levels
Hi,
IcebergS2000 - It you are positive it is SM rated along with the "C"it is therefore a "mixed fleet lubricant
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Originally Posted By: Doug Hillary
Hi,
saaber1 - "Magnesium" is typically used as a detergent. It is being replaced in some HDEOs by the more expensive "Calcium" products
HDEOs that are not endorsed "mixed fleet" and carry dual petrol/diesel API/ACEA Quality ratings should NOT be used in petrol engines. This especially applies to those with a very high TBN due to their likely SA levels
Hi,
Gary - Hi there. Yes many Commercial lubrication products are market and marketplace (country) specific
The last Specification Sheet I've seen on Rotella T Synthetic 5W-40 (not sold in Australia) shows that is dual rated
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