Yes, definitely enough.
yes absolutely
yes
15w means they are the viscosity (flow) when the oil is cold, the -30 and -40 is the viscosity of the oil when hot. Therefore the 15w-30 being the lower Viscosity means it will flow fast then the 15w-40 when the oil is hot.
To calculate the energy used by running a 15W fluorescent light bulb for 24 hours, you can use the formula: Energy (kWh) = Power (kW) x Time (hours). In this case, the energy consumption would be 0.36 kWh (15W x 24 hours / 1000).
15 quarts, 15w-40 preffered.
Basically, Power = Current*Voltage Current = Power/Voltage Current = 15/120 Current = 0.125A or 125mA
15W-40 15W-40
15w 40 is recommended for this size engine. 10w 40 will suffice if no 15w is available.
The standby power rating is one that manufacturers tend not to publish. However, the few that I have measured (yes, I am enough of a nerd to actually do it!) have been in the region of 5W - 15W. It seems that the power varies depending on how much of the television is turned off and how much is active. All of them need to have enough running to sense an infra-red signal from the hand control but at 15W, I suspect that significantly more of the control circuitry is left alive as well. Looking at all the televisions that spend most of their time on standby, the total power used must amount to a huge figure. Perhaps it's time to start a campaign for lower standby power from the manufacturers, or even turn off the mains supply to the TV when we are done with it - although that does mean having to walk to the TV to turn it on again.
The expression (15w - 39w) simplifies to (-24w) by combining the like terms. This represents a linear term where the coefficient of (w) is (-24).
15w 40 engine oil can be used for all temperatures down to -15 deg centergrade !
The weight of the oil when it is cold. The 15w is a thicker oil than the 10w when it is cold.