CamaroZ_85

Im running Mobil 1 10w30 right now and i thinkm im goin on about 2k. I know regular oil you're supposed to change about every 3k, but what about the synthetic? I was gonna go to 5k...what do you guys think??


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350, Comp 262, Edelbrock Performer intake 600 cfm carb and exhaust, headers

kjgroen

I change every 2000 miles with regular oil

Dan87IROC-Z

I change every 2500 to 3000 miles on regular oil.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission with 2.77:1 Rear End

Current Mods: Edelbrock TES 1 5/8" Headers, Hooker Aerochamber Cat-Back System, Performance Resource Chip with 160* Thermostat, Accel Ignition Components, K&N Filters, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET : 14.3 @ 97mph
(corrected for elevation)

BLACK Z

2,500 to 3,000 with mobil 1

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86Z28, GM 350, Jet perf Q-jet & chip Dual snorkel air cleaner, Edelbrock performer intake, Edelbrock headers, Edelbrock cat-back, Off road pipe, MSD 6AL, Accel Super Coil, Moroso Blue max wires, Rapid fire plugs, Jet fan switch, World class t-5, Hurst Short Throw Shifter, Ram Flywheel, Center force dual friction clutch,Aluminum drive shaft, BW disc rear 3.45's & a posi, PBR calipers, Earls braided brake lines, Polygrapite bushings all the way around, poly tranny mount & torque arm mount, Hotchkis lower control arms & panhard rod, Rancho limiter straps, KYB struts & shocks, Gm Wonderbar, Edelbrock strut tower brace, SSM sub frame connectors, Jamex lowering springs, Carbon metallic brake pads, Crossed drilled rotors, Mobil 1 Tranny fluid & motor oil, GM syntheic rear end oil, K&N, Grant stering wheel, 1,200 watt system, Jet Black Paint, 91 Z28 rims, 92 wing, Tinted windows.

five7kid

iTrader: (14)

If you talk to Mobil, they'll tell you to change per the manufacturer's instructions while under warranty. After that, 25,000 miles or one year, whichever comes first.

On the other hand, AMSOIL will tell you 25,000 miles or one year, whichever comes first, changing the filter at half that interval (either miles or time, if using their filters).

Which one is more confident in their product?

Does it hurt anything to change synthetic oil more often? Just one thing, your pocketbook. But, others say, oil is cheap compared to an engine, even synthetic oil. True, but buy the best, and keep your mind at rest. Been doing it for 17 years, not a single lubrication related failure while using AMSOIL.

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82 Berlinetta, orig V-6 car. Rescued w/86 LG4/TH700R with all harnesses, sensors, ECM, etc. 2.73 open, cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LB9 w/ZZ3 cam, ported heads, exhaust, paint, etc.).
57 Bel Air, my 1st car. Currently 396 .030 over, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

Mark305TBI

Just a little tid-bit about Mobil 1 synthetic oil...

In 1976 or 1977, Popular Science took a car and filled the engine with Mobil 1 synthetic oil. They then ran the car 100,000 miles without changing the oil (they did change the filters however). After they concluded the test they pulled the enginge, took it apart, and measured everything. After 100,000 miles and no oil changes, the engine still met manufacturer's specifications.

Having said that, I use Mobil 1's synthetic and I change it every 20,000 miles or one year, whichever comes first. When I pulled the heads and intake off my car everything looked good (no sludge in the lifter valley or noticeable wear) so I think that's a good formula.

-Mark W.
<A HREF="http://www.angelfire.com/al3/thegreycar">'88 SC Camaro w/ 305 TBI</A>

Brandog87GTA

Anyone used that new FRAM X2 filter that they say is good for like 8000 miles. It cost me 9 bucks so it better be. I am using it with mobil one and plan to change it at 4000 miles.

jason86/2.8

I don't like to go over 3000 miles on regular oil. After reading all that stuff about synthetic oil yall said I might have to start buying that stuff, esp since I drive 2000 miles a month. That would save me money in the long run. One problem though. I lose about a quart per 3000 miles so I'd be leaking out expensive oil and having to buy more expensive stuff to replace it. One more thing does anyone else enjoy a noticable difference in power on fresh oil. I honestly noticed a bigger difference when I change my oil than when I put in new spark plugs.

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1986 Berlinetta, 2.8L, newly rebuilt 700R4, 3.42 Posi. 128,000 miles and counting.
I've come to realize that I'm gonna have this car till it pukes for good, b/c I'll never be able to bring myself to sell it.

Engineboy

Every 3000 with Mobil 1.



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ASE Mechanic/Machinist/Smog Tech

1999 NBM Trans Am
1986 Chevy 3/4 ton pick up
1981 corvette
1995 Kawi ZX6R

GO #3

Mkos1980

iTrader: (8)

About 5,000 miles with Mobil 1