expiredCorwin | Staff posted Sep 09, 2021 05:37 AM
Item 1 of 5
Item 1 of 5
expiredCorwin | Staff posted Sep 09, 2021 05:37 AM
1-Gallon Castrol Assuron HD Diesel SAE 30 Motor Oil $8.04 + Free S&H w/ Walmart+ or orders $35+
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Our community has rated this post as helpful. If you agree, why not thank Archimedes001
What this means is the formulations are similar but diesel spec engine oils tend to have a lot more dispersant in there to handle soot and also usually higher ZDDP (antiwear) and detergents. They also tend to use a different type of viscosity modifier (usually a styrene type) that helps disperse soot and also has a really good shear stability as the drains on diesel oils is very long.
You could technically use a diesel spec oil in a passenger car as it is over formulated for those but... the drawback is if they have a high ZDDP level which could cause premature catalytic converter failure.
The other way around doesn't work, a passenger car oil couldn't survive in a diesel engine for a very long time. For a short period sure but not for the drains and the amount of soot those engines see.
That said this stuff is API CF-2, CF so it's old spec probably use it for lawn mowers or other random applications but not a modern passenger car or even a modern diesel.
Oh should also add that even modern CK-4 diesel oils do not have to pass the low-speed-preignition (LSPI) test so they might use all calcium based detergent systems which could be disastrous for your turbo GDI engines (VW, Ford ecoboost, etc.)
I run the diesel version it in my outdoor gas engines - mower, tractors, etc since they don't have emissions / cats.
This is cheaper than the TSC jugs I buy so will grab a couple of these.
What this means is the formulations are similar but diesel spec engine oils tend to have a lot more dispersant in there to handle soot and also usually higher ZDDP (antiwear) and detergents. They also tend to use a different type of viscosity modifier (usually a styrene type) that helps disperse soot and also has a really good shear stability as the drains on diesel oils is very long.
You could technically use a diesel spec oil in a passenger car as it is over formulated for those but... the drawback is if they have a high ZDDP level which could cause premature catalytic converter failure.
The other way around doesn't work, a passenger car oil couldn't survive in a diesel engine for a very long time. For a short period sure but not for the drains and the amount of soot those engines see.
That said this stuff is API CF-2, CF so it's old spec probably use it for lawn mowers or other random applications but not a modern passenger car or even a modern diesel.
Oh should also add that even modern CK-4 diesel oils do not have to pass the low-speed-preignition (LSPI) test so they might use all calcium based detergent systems which could be disastrous for your turbo GDI engines (VW, Ford ecoboost, etc.)
I run the diesel version it in my outdoor gas engines - mower, tractors, etc since they don't have emissions / cats.
This is cheaper than the TSC jugs I buy so will grab a couple of these.
It's also commonly speced on older farm equipment.
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Additive companies already make a low volatility ZDDP but even those still have a small percentage that volatilizes. So yes you're right it's just oil that somehow finds it way out of the engine sump.
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