Prolong or Duralube
Launching!
Joined: May 2004
Posts: 295
Likes: 0
From: Colorado Springs
I have heard great things about this stuff too....on the late night info-mercials. I tend to shy away from putting liquids in the engine that weren't initially intended to go there. Your dealerships service department wouldn't recommend it. Personally, I have never used anything like that (as I never felt the need), so I can't comment on how (well) then work or not. I'd just be sure to keep clean oil in the thing, and no additives. Makes it easier to narrow down culprits when something goes wrong. Just my opinion though.
TECH Senior Member
Joined: Nov 2001
Posts: 9,246
Likes: 3
From: Troy, AL
A complete waste of money, IMO. My company has a GM van with 693,000 miles on it (as of the last time I checked. Probably over 700,000 miles now.) ORIGINAL untouched engine, transmission, and rearend. It's had the fluids, filters, and plugs changed. That's it. NOTHING else. No snake oils, no engine cleaners, nothing special at all...not even synthetic oils.
IMO, you simply don't need that stuff. It'll probably do more harm than good.
IMO, you simply don't need that stuff. It'll probably do more harm than good.
Joined: May 2004
Posts: 1,593
Likes: 267
From: Halfway back on the Highway to Hell...again!
LS1??? MOBIL 1!!!! change filter every 2500-3000 if driven hard, the oil will last 6-7000. Don't under estimate synthetic oil and if you do run Mobil 1, don't add any additives. Let it do it's job. I have been running Mobil 1 for many years. Put it in a brand new 1978 Camaro, yore the engine down for a rebuild after 150+,000 miles, bearings had only .0015 of wear from stock size, crank was perfect, just had to be polished, Had to be bored due to Cast iron rings used back in those days, mic'd the cam, virtually perfect, of course I had to put a bigger cam in though. My father and I have run M 1 in every race car we had, never any wear, just breakage from weakening parts.
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Why do the names of these products in the message title make me think I'm about to see an ad for an "adult toys" catalog... 
Prolong, hehe....
A few years back I used Slick 50 a few times. That was before I started hearing about the teflon possibly building up in places it wasn't supposed to. And z-max supposedly can cause accelerated wear on bearing surfaces. I did put some Restore in a '78 TA with the Cali. 403 Olds engine, and got a few more years out of it that way. Had to replace the oil pressure sensor, that was the only ill effect from using it.
I stay away from all of it now.... The synthetic oils are very good. Regular changes makes a big difference. If the filter gets partially clogged and the bypass opens, that's where the crud gets into the bearings and kills them.
Prolong, hehe.... A few years back I used Slick 50 a few times. That was before I started hearing about the teflon possibly building up in places it wasn't supposed to. And z-max supposedly can cause accelerated wear on bearing surfaces. I did put some Restore in a '78 TA with the Cali. 403 Olds engine, and got a few more years out of it that way. Had to replace the oil pressure sensor, that was the only ill effect from using it.
I stay away from all of it now.... The synthetic oils are very good. Regular changes makes a big difference. If the filter gets partially clogged and the bypass opens, that's where the crud gets into the bearings and kills them.
Originally Posted by SAPPER
LS1??? MOBIL 1!!!! change filter every 2500-3000 if driven hard, the oil will last 6-7000. Don't under estimate synthetic oil and if you do run Mobil 1, don't add any additives. Let it do it's job. I have been running Mobil 1 for many years. Put it in a brand new 1978 Camaro, yore the engine down for a rebuild after 150+,000 miles, bearings had only .0015 of wear from stock size, crank was perfect, just had to be polished, Had to be bored due to Cast iron rings used back in those days, mic'd the cam, virtually perfect, of course I had to put a bigger cam in though. My father and I have run M 1 in every race car we had, never any wear, just breakage from weakening parts.
The "mystery oils" do nothing to help your engine that that a good synthetic oil couldn't. 
Originally Posted by gymratt
LS1???German Castrol Syntec 0W30!!!!!!There is alot of discussion on best oil/oil filter on this board and Bobistheoilguy.com.German Castrol and Amsoil were by far the best oils for Ls1's based on oil analysis at oil change intervals.K&N and Napa Gold/Wix filters being excellent choices for filters.
Originally Posted by zamboxl
so where could one get amsoil or german castrol down in south florida.????
lol, thanks for the tip, sorry colonel and gymratt apperently i'm just a lil to post happy to read, i'll stop wasting my money, thanks for the advice
Originally Posted by gymratt
I have local amsoil sellers hear in Milwaukee, but you can get it thru the internet. The German Castrol is found at Autozones nationwide. The German Syntec is in a black bottle with a small red 0w30 label. On the back it will say made in Germany, and there will be several euro certifications, Porsche approved, BMW longlife etc. http://www.bobistheoilguy.com/ has alot of great info on additives, tranny fluid, gear lube, you name it. There has been alot of great discussion on oils/additives with great advice by ls1tech's own resident oil expert Patman.
TECH Veteran
Joined: Aug 2003
Posts: 4,954
Likes: 1
From: Kent WA
Originally Posted by zamboxl
why is that?? are you saying to go beyond 3k miles??
Originally Posted by Tranzor_Z28
Definitely you can go longer than that on synthetic... I change my oil & filter every 6k miles or 6 months, whichever comes first. Usually for me it's the 6 month marker...
