Here is that link to the comparison about using Lucas.

http://www.bobistheoilguy.com/images/lucas/lucas.htm

 

Bob the oil guy is a genus.

I'd like him to do that with Marvel Mystery Oil.

 

hey just a quick question before i go buy my oil, im gonna do a switch from conventional to synthetic, do i have to do a flush of my oil system, my stepdad keeps on talking about back in the old days having to do that

 

I wouldn't think so. Just let the engine warm up well, and when you drain the oil, let it ALL drain out. So pull the plug and go eat lunch and come back later. It takes a really long time for a 4.7 to fully drain all the oil.

But if you let the old oil completely drain out, change the filter, and then refill it with synthetic, you should not have a problem.

BTW what kind of oil do you plan to use? Are you staying w/ Valvoline and going Syn-Power? I would.

 

just to clarify about the lucas stabilizer. coming from own personal experience and a master diesel tech. its fine. honestly ive ran it with castrol GTX. its ment to stick to everything and it does. ive drained my oil after a good heavy pull on the highway, not even to let a minute to pass before i drop the pan plug.. no foam.. however i switched over to amsoil 10w30 25,000 mile service.. i only run the stuff 6000 miles then i change it. throw on a K&N oil filter and im set.

remember you get what you pay for. the more expensive stuff, better detergents and lubricity properties.

 

That is not always the case... Some more expensive oils have been proven to not protect any better than that off middle of lines oils.

Mobil 1 and Royal Purple are the most expensive and they protect no better than Pennzoil, Valvoline or AMSOIL (although I dont know how expensive AMSOIL is per qt.)

 

nah im not gonna switch to synthetic this time, my step dad owed me oil and was a cheap bas**** and got some castrol gtx and bosch oil filter for $15 at autozone, i usually used havoline conventional but i was prolly gonna go with the valvoline

 

What waight of oil should i be using?

 

Is there something wrong with Castrol GTX? I've been using the HM version for a while..

 

i use 5w30 royal purple with a k&n filter cause it has the nice nut on the bottom of the filter for easy removal cause the oil filters arnt always fun to get out