My 04 TJ has 107,000 miles on it and I decided to start using royal purple for my oil from now on, my question is how many miles can I run this oil I normally do an oil change every 5 with regular 1030 oil, but now that I put synthetic in it can I go maybe 10? thanks
This has been debated ever since synthetic became popular. Some say you can go 6-10k miles as advertised and some say to still change every 3k. Personaly I saw no benefit of synthetic in my jeep only less money in my wallet, If you go off road a lot and get the oil dirty it would probably be better to get cheap oil and change at 3k, but its up to you.
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When I run synthetic, I personally change it every 5...when running conventional, I change every 3.
According to my buddy who's a mechanic, he says if you tear down an old engine that had the oil changed every 3,000 miles it will look noticeably cleaner than one that had the oil changed every 5,000 miles. I've never seen this for myself...just what he says he's seen.
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Oil breaks down faster from contamination than it does from heat. Dino oil or synthetic will get just as many contaminates in it that can not be filtered out. Change it every 3000 under extreme conditions with dino oil and you will be good to go and have a little extra coin in your pocket.
2000 Sahara, 3.5" Rubicon Express Lift, 1" spring spacer & 1" Body Lift, 33" or 35" BFG Mud tires, Front & Rear ARB, Rancho 9000 shocks, UCF Ultra High Belly Up
I use royal purple in diffs, xcase and tranny. Dino oil in engine and change at 3k.
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I worked at Texaco express Lube for 4 years in the pit, and I have seen both come out of the underside, and from what I was taught in lube school ( yes they sent me to lube school) if you change form dino to syn oil or visa-versa, flush the engine out completely FIRST, and change the oil every 3 to 5k, same as dino oil, the only difference is syn oil has every molecule the same size where dino oil is different size molecules, so if the rings are work small molecules of dino oil will pass, where as bigger molecules of syn oil won't, HOWEVER, this is NOT a fix for worn engine parts, and could possible cause extreme engine damage too. But under normal operating conditions both are the same as far as lubrication properties, they both get dirty, they both need changed, but syn oil is mane made, not pumped out of the ground, but you'd be surprised to know how much dino oil it takes to make one quart of syn oil LOL
I am finally on board with obama's hope and change thing. I now HOPE that when its all over I have at least a little CHANGE left.
Use the same oil change interval with synthetic as you do conventional mineral-base engine oils.
The synthetic fananatics will claim you don't have to because synthetic lasts longer... but what they fail to either also say or even know is that synthetic and conventional engine oils collect contaminants like combustion byproducts, acids, dirt, etc. at exactly (!) the same rates. The only way to get rid of said contaminants is to change the oil since no conventional oil filter can filter them out.
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I use synthetic and change it very 5000 miles, unless it gets real dirty prior to the 5000 miles. I also change the filter around 3000 miles. Why, I can't tell you. If I remember, when synthetic first starting being advertised, they claimed it could run 10,000-15000, but in the small print it said to change the filter at 3000-5000 mile intervoles, and that stuck with me.
What folks don't realize when running synthetic is the oil doesn't break down as fast but still gets just as dirty. Run a oil filter that lasts up to 10 k and u can get more out of ur oil. I personaly do not recommend going the full 10k