STALL UP

iTrader: (2)

I just pulled my oil pan today and I must of had a 1/4in of thick black nasty tar like sludge in the pan the pick up tube had tar like residue on it and the screen was about a 1/4 blocked with sludge. I ran mobil 0ne for the first 10-15k miles and then royal purple from there untill 48K miles and changed the oil every 3,000 with a ac delco filter. Has anyone else had this problem? I am concerned if I should run royal purple in my new 408 or not.

Websy21

iTrader: (34)

wow, never heard of that before??????

engineermike

Sludge in oil is typical heavy crude components falling out of solution, or oxidized oil. By definition, sythetic oils don't have heavy crude components, nor do they oxidize as quickly as conventional oil. If you are getting sludge in the pan, I wouldn't quickly blame the RP. It could be compatibility issues with the old Mobil 1, or contamination of combustion products/antifreeze/etc.

Mike

cracker

iTrader: (1)

I have seen this on LSX based motors and mod motors alike. Ive had customers come in and tell me theyve run nothing but RP for the life of their motors. They look like black goo throughout.

I will never support or put any Royal Purple products in any vehicle. Ive seen too many issues with their products.

Mobil 1, Torco, or Castrol non synthetic for break in periods.

98turbls1

iTrader: (17)

I've used RP for quite a while... I've also been very happy with it but am thinking about going with Amsoil... Has anyone here ran that in a FI engine religiously?? It's just to me that RP is a bit thinner for the same weight as other brands....

RooRnZ28

iTrader: (14)

uh oh, i run RP in my rear end... well we'll see how it is whenever i change it out

El_Diablo

iTrader: (9)

I've been running RP for years. No problems yet.

Brains

iTrader: (7)

I've seen the same thing with RP. I almost refused to do a heads/cam swap on a guy's car once, the drainback holes in the heads were full of thick goo. I put some in a baggie for him to look at, and needless to say he was VERY shocked, and switched oils immediately after. On one of our personal vehicles, it only took 2000 miles of RP to take a previously spotless motor, and coat it in a burned flaky purplish mess on the inside of the timing cover.

Maybe it's certain grades of RP or something, because there's FAR too many people with good reports, and reasonably few horror stories.

Websy21

iTrader: (34)

Maybe that comes with the added hp they advertise? Just kidding but thats weird, sticking to mobil 1 I guess

2001WS6Vert

In my experiences as a plain ole wrench it seems that oil can contain so much contamination before it is saturated and sludge formation begins. Even the cheapest $.99 stuff seems to do the job if changed at proper intervals. In my last motor the Mobil 1 became goo but it was due to leaking sleeves, I still run Mobil 1 and it is fine now. My guess is that it is another problem and not caused by the oil.

linn.35

I had purple sludge in my heads from royal purple. i have since put new heads on my car and switched oil. i now use amsoil.

BAD ASS TA WS6

iTrader: (5)

Sounds a little funny, especially with 3k mile oil change intervals.

Almost sounds like a crankcase ventilation problem.... Weird.

I use Pentosin, which is a German oil. No complaints here. I run their 5W30.

engineermike

Yea, you really have to have the oil analyzed to understand what's going on.

http://www.mobil.com/USA-English/Lub...l_Analysis.asp

These services are quite common, but mainly used for industrial stuff.

Mike

Pewtavert

Redline Oil here.

KWIKKAR

iTrader: (15)

I'll be pulling my oil pan here in the next week or so. I used Mobil 1 until about 10K miles ago. So will see whats going on.

STALL UP

iTrader: (2)

post back when you get the pan out and let us know what it looked like . My friend told me tonight that he used Mobil one for about 35k mi in is stock motor before pulling it and the pan and engine was very clean no build up

KWIKKAR

iTrader: (15)

35k was about the time I changed.

cracker

iTrader: (1)

I know the previous shop I worked at had numerous pics from different vehicles of the damage and sludge that was in those motors.

I might have a few from the mod motor crowd.

ZL1Killa

iTrader: (17)

its all about the cSt rating www.bobistheoilguy.com and what the ls1 likes... around a 14.3 or so cSt rating

i use mobil 1 5w30 with tufoil i run it in all my cars

Silverback

Huh, never run it long enough in anything to notice any sludge, but I’ve had repeated issues with it dissolving RTV and causing leaks. Especially the gear lube. Copper, black, blue, grey, they all just seem to turn into a gummy sludge, I’ve even let it sit assembled for a couple of days to make sure that the RTV is totally dry before filling and it still happened.