Thread: Engine Oil +

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Use any off-the-shelf 10W-30 motor oil and add one bottle of extreme pressure lube to the oil with each oil change....
http://www.summitracing.com/parts/isk-zddp/overview/
Flat tappets, particularly ones that have to live with stronger valve springs and/or more aggressive cam ramps, will not live long without an extreme pressure lubricant added to the oil. Additives that used to be in the oils have been removed due to the negative effects they had on catalytic converters; they were costing the OEM manufacturers too much money in warranty claims for replacing plugged converters. Later motors with roller lifters do not need the extreme pressure lubricants.

Use 50/50 mix distilled water and good-quality anti-freeze/coolant. If the radiator is aluminum, it's a good idea to screw a sacrificial anode into the drain cock hole.
http://www.summitracing.com/parts/flx-32060
Recommend using a 195 degree or hotter thermostat. The motor needs this heat in the coolant to help burn off acidic by-products of combustion that blow past the rings and end up in the engine oil. Some fellows think that using a 160 thermostat is the hot tip. It ain't. Efficiency depends on the motor being good and hot.

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