Engine knocking

[TjXiong]

My engine have been knocking from my first oil change
i had the car with 25000 miles on it
i took it to a performance shop
and they say that it might be a lifter
one other dude says the same thing
i was thinking about a rod
the knock comes when the engine is cold and once you start it up it knocks
once the engine is warm and being driven for 30 min it stops
but once in a while it comes back again (a on and off thing)
i try changing oil using different one.
need help
(420a motor)

[JET]

Yeah, probably just lifter tick. What kind of oil and filter are you running? My DSM's have always ticked with Mobil 1.

[tnm27]

My eclipse was ticking with synthectic. I changed it and now i'm using Castrol Syntec, with a Mitsubishi Oil Filter. I also hear that Rotella is a pretty good with Dsm's.

[TjXiong]

everything is stock
regular mobile 1 right now but i use to put in valvoline synthetic

[TjXiong]

it sounds like metal knocking metal
which oil should i change to

[bluntedelvis]

When I first got my 2g I was running Mobil 1 didnt like it so I switched to Amsoil formula R had more tick, I switched one last time to RedLine syn. no more tick. So I'm sticking to RedLine syn.

[b00stcreep21]

Lifter tick is problem
broken engrish hard to understand
please use period

[tnm27]

Redline is a good product to use if your thinking of sticking with synthetic. Lse sells a good line of their products.

[Swifty1638]

Change out your lifters for some 2g ones, or get them off a kia like I did. bigger pinholes, allowing for better flow. All you need is to get a tool to compress your valves, and the rocker slides right out. Takes about half an hour to swap them all.

-A. Swift

[TjXiong]

How much does it cost to change out the lifters?
How do you do it to by the way because i have no clue of how to fix it myself. Any help with it will be appreciated.
Thanks.
Where do i get Redline oil?
Does LSE only have it or I can get it somewhere else?