Amsoil or Mobile 1 Engine Oil.

I'm sure my engine is not as tight as it was in 1991 so I run 10w30. She gets parked for the Winter so I don't have to worry about freezing cold starts.

kwslvdo96 said:

is there a big difference in running 5W30 to 10W30?

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I switched from 5w to 10w and it really helped my oil burning issues from valve stem seals.

^ i dont see how. 5w and 10w is the oils winter. its still a 30 wieght once warm but its either thinner or thicker upon startup depending on what winter 0,5,10,15w etc.

as for royal purple, probably the biggest oil joke. The only oil where the best oil is the one you can afford saying goes out the window because its cheap oil for a really expensive price with some dye in it.

Don't know how either but it helps.

Modern engines don't burn oil like older ones did. The machining is better, the rings and ring grooves are a better material and design, valve stem seals are better, etc.

I really don't see anything wrong with an engine that uses a small amount of oil. That way, you know it is getting some oil on the valve stems, and on the cylinder walls. My 5.7 vortec, with 85000 miles, uses a quart every 3000 miles. I consider this healthy. That is with 5W-30 Mobil 1 in the crankcase.

Even if it started using more oil, I would not switch to a thicker viscosity oil, because I want the quicker flow to the bearings on the crank and cam on startup.

If my engine was using a lot more oil, say more than a quart every 1000 miles, I'd want to know why, and if needed, do a repair.

My final thought on this thread (YEP! another oil thread) is that all the major companies produce a quality product, if you buy at the top of the product range. As has already been pointed out in this thread, it's probably more important how often you change oil, that what brand you choose. My personal bias is that Amsoil and Royal Purple are brands with more hype and price than with any superiority in quality.

I run Valvoline syn power and run NAPA platinum (Wix extended life) filters on all my vehicles. Miles range from 50k to 266k and I change every 10k

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Like I stated before Im going to just stick with the Mobil 1 I've been using I haven't had any problems with it so im going to stick with it. My truck only has 52K original miles so as far as burning oil it uses about 1/4 of quart every 5K miles and that is my oil change interval. And it really doesn't use that if I really measured it out.