Hi dudes,
Just hit the 3100km mark on my rebuild engine. So far I did 3 oil changes with snake oil and GM filters.
Now I want to ditch the snake oil, thinking that by now the engine will be fully break-in.
Read somewhere that u should not put synthetic oil to a rebuild engine.
Also as my tunes improve I wanna install my ZEX nitrous system.
Do you think the mileage is good for the change of oil?
I'm planing on using 15W50, any sugestions on that part?
Thanks in advance
Need a Freakin' Roll Cage, and a Death Insurance
i always ran mobil 1 10-30 . no probs, great oil. DO IT!
07 SILVERADO CLASSIC 2500 HD 4x4 CREW CAB LT3 DURAMAX LBZ/ALLISON 6 SPEED 5'' MBRP Turbo back exhaust 6'' TIP /NO CAT- NO MUFF/ AFE Intake/ EDGE HOT JUICE /MERCHANT AUTO STG III Built Allison/P I ConverterTTS Twin Lift Pumps. Tierod sleeves/Cognito braces.17x9 Moto metals_______ Old Truck ,04 Z-71/Turbocharged,/cam/stall/Zippy Built TRANS/Nelson Tuned------
i heard that synthetic oil will make tiny leaks more evident...guess it just makes it into smaller cracks and crevices. maybe thats why they dont recomend it on a rebuilt motor? i wouldnt wory about it. 10w30 is what i use too.
old mod list: H/C/I/N/E/G 408
new mod list: 5.3, gears/posi, mufler and tune : (
They throw Mobil1 into the brand new Vette engines.... That is before break in
My understanding is after an engine has a ton of miles it will only make the leaks show faster as TXsilverado said.
Do a search for a website called the Oil Bible, impartial commentary comparing the oils and the problems with them.....
ill be synthetic soon
I myself would go another 3000km on the conventional oil. Allowing good ring seating. Like a couple others have eluded to. 5W-30 or 0W-30 depending on the temperature in your part of the world.
Full synthetics are the only way to go in a performance engine.
03 Chevy ECSB, Z71, 6.0L(LQ4), Maggie @ 9PSI, 4l80E, PI Vig 2800, Detroit True-Trac, 4.10, 90mm LS2 TB, Meth Injection, HSW Dry N20, LPE GT7 Cam, 918 springs, Dynatech LT's, Hi Flow cats, custom stainless exhaust, DMH cutouts, DJM Suspension Drop, E-Fans, AirAid, HPT 2Bar SD Tuned, 11.68 @ 114.2
I do have a small leak in the oil pan gasket, could not find here a new one, and thought the old will resist. Wrong. Actually it do not hit the floor, but you can see a small area of the oil pan wet!!!!!!i heard that synthetic oil will make tiny leaks more evident...[/b]
Just gonna lok for it, thanks a lot for the tipDo a search for a website called the Oil Bible[/b]
That's my concern exactly, ring seating!!!! So you think I'll should go for snake 3000km....I'll do it, even that I drove it hard past the 1500km mark, there is no damage to go 3000km more.myself would go another 3000km on the conventional oil. Allowing good ring seating. Like a couple others have eluded to. 5W-30 or 0W-30 depending on the temperature in your part of the world.[/b]
We have a 22-37 celcius average(71-98 F) temperature, so I guees going below 10 make no sense. And the market here does not have that many options. there's 0w45 and 15w50 in Mob1, Penzoil have it too but diferent rates, and I don't like penzoil, I love Kendall when I was young, but they don't import any more
Need a Freakin' Roll Cage, and a Death Insurance
Im running synthetic and its works great.
DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31
2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts
I bought my truck with 37K on the clock. I run only Mobil 1 synthetic.
2000 Silverado ECSB, 5.3L, 7" CST/3" PA lift, Hanneman 'glass fenders & bedsides, Currie Dana 60 W/ Detroit Locker, 4.56:1 gears , Willwood Dynalite Pro 4 piston rear brakes, Bowtie Overdrives 4L80E, Nelson Tune & Fan Harness, Harland-Sharp 1.8 Roller Rockers, 2200RPM Converter, Mezerie electric water pump, K&N FIPK II, Dynatech Supermaxx SS LT headers & SS cats, Flowmaster American Thunder cat back, Magnecor wires, Flex-a-lite 282 monster fans, B&M Hi-Tek trans cooler . No DEathCOOL.
And an ls1.com decal on the back window!
Synthetic is graded the same as traditional oils, viscosity is supposed to be greater then or equal to the same grade petroleum oil. So I can't see how it would show cracks/leaks any better. I could be wrong though. I have used Mobil1 the life of my truck and after 150,000 miles on the truck it has yet to use a single drop of oil. I also do not have a block heater in the truck and the engine has never even so much as lagged when starting. Even when it hit -29 Celcius. Another I have also run Royal Purple in another of my vehicles and have been everything but dissapointed as well. I'll be even happier if they sponsor my stock car next year lol.
There are a lot of new cars that come with synthetic now.
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