whats the best oil to run in these lightnings? also what spark plugs should i go for? im freshening everything up.
Yeah, Motorcraft 5-20 or any fully synthetic 5-20 will work. The only "best" oil is the one you choose.
With no other mods listed besides the cat-back, stick with new stock Motorcraft plugs, they work well and for a long time. Once you up the performance, move to NGK's or equivalent.
I'm not a fan of any 5w20 oil in a modular engine. I use Royal Purple HPS 5w30 in my L.
I'm not a fan of any 5w20 oil in a modular engine. I use Royal Purple HPS 5w30 in my L.
Agreed, same applies for 03/04 Terminator Cobras.
Anyone wonder why now Ford uses a 5W-50 full synthetic on the supercharged Fords and a 5W-30 in the EcoBoost turbo Fords but Lightnings and Terminators are supposed to be "just fine" with a synthblend 5W-20?
Think they might have learned something over the years?:dw:
Or that our engines are actually designed to use the 5w20, and the use of anything else compromises what the oil is SUPPOSED to do?
Which is more than just lubricate: it's there to cool the bearing surfaces and internals of the crank, the cams, the rods, the wrist pins; it's there to keep the bearing surfaces apart as well; and to carry contaminants away and (hopefully) trap them in the filter, or evaporate them into the PCV airstream (see the connection?).
Also note that most oil coolers are inside the radiator: this is so the temperature of the oil is controlled and kept at optimum temperature for maximum lubricity and flow. Heavy oils tend to not flow well, which compromises all sorts of things in the engine, and could lead to bearing starvation, oil breakdown (because it overheats in the bearing spaces and breaks down), and eventually bearing failure.
Today's cars are being designed to runs on even thinner oils, mostly because these oils resist breakdown far better than their ancestors ever could. The thinner oil allows tighter tolerances, more flow, better lubrication, better cooling, and better bearing surface control.
So don't diss the original oils: our motors were specifically designed for them; so unless you've built a motor designed for 20w50, it's not a great idea to use it. 10w30 isn't so bad, because it's just the upper end of the range where it extends, which can be helpful in very hot and stressful environments (and it's not so far out of range that it will compromise lubricating/cooling performance).
I have a K&N oil filter in my garage for the L engine. Are they any good? or should I go with motorcraft oil filter.
Modulars were actually designed for 5w30, Ford just changed to 5w20 (without making any changes to the engines) just to help with CAFE numbers.