DougH
Mitsubishi Forum Moderator
Reged: 02/25/01
Posts: 9781
Loc: Putnam, CT
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So whats the deal here. I have heard that syn slow the rings from seating right. But some of the nice cars (vettes) run mobil 1 or some other synthetic right from the assembly line.
I already am going to be seeing a decent break in time... due to my chrome rings.
Whats your opinions on this?
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DougH
1995 Sr. High speed dirt!
www.terminalstills.com
Edited by DougH (11/10/04 02:53 PM)
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Anonymous
Unregistered
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you should always break-in on Dino....
after 1000 miles though...it's open season on the throtle and oil ![[Hillbilly]](graemlins/notooth.gif)
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1987Raider
Body Damage is Cool
Reged: 05/12/02
Posts: 1085
Loc: Kentucky
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I used Hastings chrome rings, and was strongly advised by my machine shop (and on this board) to use dino oil until after break-in.
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1987 Raider 2.6L Auto -- rebuilt, by hand, by me -- Bouncy Seat/LSD/Aisin Hubs -- CB/Whip Antenna --Jensen Stereo -- Fire extinguisher .
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Jay Ayala
Body Damage is Cool
Reged: 07/15/02
Posts: 1225
Loc: Hillsboro, OR.
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Forgive my ignorance:
What is Dino?
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89 Raider - V6, Automatic, rear LSD, A/C Retrofit, Cruise Control Retrofit.
Ayala: Pronounciation - Eye All Ahh!
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1987Raider
Body Damage is Cool
Reged: 05/12/02
Posts: 1085
Loc: Kentucky
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Dino = Dinosaur Blood = normal from-the-ground oil, not synthetic.
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1987 Raider 2.6L Auto -- rebuilt, by hand, by me -- Bouncy Seat/LSD/Aisin Hubs -- CB/Whip Antenna --Jensen Stereo -- Fire extinguisher .
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fasteddy
Web Wheeler
Reged: 01/30/01
Posts: 12704
Loc: Flat Creek, GA
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DINO. Chrome rings are hard enough to get to seat even if you use straight 30wND for the initial break in. I personally prefer moly rings to chrome, just for the better break in, because I think it gives you the best long term seal. I also think that moly rings convey piston heat to the cylinder walls and the water jacket behind them better than chrome rings.
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"If you can't be a good influence, don't worry, you can still be a horrid example."
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DougH
Mitsubishi Forum Moderator
Reged: 02/25/01
Posts: 9781
Loc: Putnam, CT
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I do have the moly rings that came with the pistons... they didnt have any bare pistons in the us... only sets. So for 18 bucks more I got an extra set of rings.
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DougH
1995 Sr. High speed dirt!
www.terminalstills.com
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Movinfr8
Rock Warrior
Reged: 07/16/01
Posts: 768
Loc: Southaven, MS United States
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But what about all the manufacturers that spec Mobil 1 for "factory fill"? not to sound like a commercial, but I have wondered that for a while, I have always heard Dino, but that got me to wondering, as I am sure that Mercedes and Porsche do not want customers complaining that their 80K auto is smoking.
Norm
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95 LS 3.0
Buckshot Maxxis Mudders, 33X12.50X15 (finally)
Hella 500 series lights, Gulf Coast Filters Bypass Oil filter,
Garmin Etrex Legend GPS, Cobra CB
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DougH
Mitsubishi Forum Moderator
Reged: 02/25/01
Posts: 9781
Loc: Putnam, CT
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Tighter fitting pistons... special way they crosshatch during honing... ??? Got me. Maybe they come ready to go from the dealer... already broken in at the factory.
[ March 12, 2003, 05:04 PM: Message edited by: DougH ]
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DougH
1995 Sr. High speed dirt!
www.terminalstills.com
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fasteddy
Web Wheeler
Reged: 01/30/01
Posts: 12704
Loc: Flat Creek, GA
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A lot of high end German car pistons are Mahle alloy. The most sought characterisitcs of the piston aluminum alloy are a ductility for forging, tensile strength of the fianl forging, and coefficient of expansion for piston fit. Mahle alloy has very good characteristics in all three areas. They use a very tight piston fit for NVH reduction and to keep the rings surfaces dead perpendicular to the cylinder wall (because NO piston rocking). That may have something to do with the Mobil1 reccomendation, or it just could be a case of "the owner's too stupid to figure out a change of oil type - let's not confuse him".
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"If you can't be a good influence, don't worry, you can still be a horrid example."
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