My engine makes alot of lifter noise when cold if I use 15w-50. It likes Valvoline VR1, 10W-30, which as mentioned, was the recommended weight.
BTW: The first number is the cold viscosity and the only number that is influenced by
outside air temps (if your cooling system is working properly). A lower number flows better when cold. A high second number like 50 (hot viscosity) is usually ment for racing applications but can be good for older engines since tolerances are greater than modern engines.
Unfortunatly the EPA took our ZDDP out of regular oil and one of the few oils that has enough for our flat tappet engines is Val VR1 racing oil (all weights) and Mobile 1 in 15w-50 weight only. To get enough Zddp with your brand of normal oil you will have to add it.
Goto cam-shield.com to read more.
71 Mach1 351C-4v TKO 5-speed
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1966 Ford Mustang C-Code: 302 w/ holley 600cfm 4bbl, C4, factory A/C, edelbrock rpm performer manifold, comp cam, 3.93 gears,longtube headers, 2.5" exhaust, thrush glasspacks, petronix ignition/MSD blaster 2 coil, 15" torq thrusts, front discs, shelby drop, monroe gas shocks, red int painted mercedes black Jan 2011. NEW video!) http://i1033.photobucket.com/albums/...C03754copy.jpg
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Last edited by AKM92; 03-08-2011 at 09:07 PM.
Reason: oil filter addition
Better to get the right amount, Zddp should be around 1200-1600ppm. I have read you can put in too much ZDDP and gunk-up the engine and even start pitting metal surfaces. ............"
I have researched and found the same information.
So know how much zinc your preferred oil has AND how much your zinc additive will raise that amount. CamShield isthe only additive I know of that provides a formula to accurately measure and arrive at the target zinc level.
ha i live in californi as well. i run 5 quarts. K&N oil filter, the oil i run is Joe Gibs racing oil it is mainly break in oil but use it anyway(even though i am still in break in). Joe Gibs uses the same oil to break in his nascar engines. i will go look at the weight and tell you guys cause i forgot. now i remember i remember why i forgot i just looked at it and it doesnt say. probubly 15W-30 didnt seem that heavy. 7$ a quart at least that is better than 10$ a quart for royal purple jeez.
Just buy any weight/any type you want at the local auto parts store (maybe $2), check the ZDDP level and ad the correct amount of Camshield (maybe a 50 cents to a dollars worth) and you have the perfect blend. I run 20W-50 - but it is a summer only car, which gets few miles and high rpms.
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