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Joined: Apr 2004
Posts: 540
Veteran CEG\'er
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Veteran CEG\'er
Joined: Apr 2004
Posts: 540 |
It's not so much of a stability question, as it is a question of letting the acid build-up in the oil sit w/o flushing.
'98 SVT Red/midnight blue - a few mods
E0 wheels for sale - PM me
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Joined: Mar 2005
Posts: 140
CEG\'er
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CEG\'er
Joined: Mar 2005
Posts: 140 |
I change the oil out every 5000-7000kms. I do my bike about every 2000kms, but it also rev's up to 12K RPMs, heh.
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1999 Black/Tan CSVT
#2658 of 2760
201,000+km
- K&N, Magnecor race wires, Optima red top, BAT Euro Kit, KVR CF pads, PIAA Plasma Ion bulbs.
1989 Yamaha FZR600 - 40,000+km
- K&N Pods, Stage 3 Jets, V&H 4-1 exhaust
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Joined: Nov 2000
Posts: 10,015
Hard-core CEG'er
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Hard-core CEG'er
Joined: Nov 2000
Posts: 10,015 |
Acid build-up from where????
Acid is only made when the vehicle is running from H2S (hydrogen sulphide) from the exhaust gases, that combines with water to form H2SO4.
When the engine is sitting there how can acid form out of thin air??
It's a myth.
2000 SVT Turbo 295hp/269ftlb@12psi
#1 for Bendix Brakes Kits!
Knuckles rebuilt w/new bearings $55
AUSSIE ENDLINKS $70
Gutted pre-cats $80/set
A lack of planning on your part does not constitute an emergency on mine!
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Joined: Oct 2000
Posts: 4,149
Hard-core CEG'er
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Hard-core CEG'er
Joined: Oct 2000
Posts: 4,149 |
I go 10k and get an analysis each time.
-- 1999 SVT #220 --
In retrospect, it was all downhill from here. RIP, CEG.
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Joined: Apr 2004
Posts: 540
Veteran CEG\'er
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Veteran CEG\'er
Joined: Apr 2004
Posts: 540 |
Combustion byproducts - if you would like I can show reams of engine oil data showing the decline in pH over time (as a result of combustion). Granted the data is all heavy duty diesel, though the same lessons apply. Also granted, gasoline on-highway engines are very light duty, so the combustion byproduct creation is siginificantly less (not to mention the differences in fuel, but that's another subject).
'98 SVT Red/midnight blue - a few mods
E0 wheels for sale - PM me
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Joined: Sep 2002
Posts: 6,106
Addicted CEG\'er
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Addicted CEG\'er
Joined: Sep 2002
Posts: 6,106 |
I still go every 3000 miles. I'll occassionaly go over to 4000 or so miles, but not that often. I think I put 7000 miles on the car last year, and that's only because I daily drove it while the Sunbird was down for a while. Now that I've got the SHizzO, I hope to only put ~3k miles a year on the Contour. Mark
2000 Black CSVT
3.0L Hybrid - 206fwhp & 195fwtq
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Joined: Nov 2000
Posts: 10,015
Hard-core CEG'er
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Hard-core CEG'er
Joined: Nov 2000
Posts: 10,015 |
I'm not disputng the decreasing pH of an engine that is RUNNING over time. But the pH will not change from when you park the car at the start of winter till the end when you bring it back out.
2000 SVT Turbo 295hp/269ftlb@12psi
#1 for Bendix Brakes Kits!
Knuckles rebuilt w/new bearings $55
AUSSIE ENDLINKS $70
Gutted pre-cats $80/set
A lack of planning on your part does not constitute an emergency on mine!
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Joined: Oct 2004
Posts: 2,116
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Oct 2004
Posts: 2,116 |
You are using DESIEL facts in a gasoline engine?!?!? Desiels vehicles don't even use spark plugs for crying out loud. Oil is going to be used diffrently in each type of engine. Why don't I just put 2 cycle oil in my car....you put that into an engine. Just listen to Sazi and Demon in this site...they seem to know what they are talking about.
95 SE MTX
svt exhaust
intake
deer killer
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Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
I change my oil every 4-5 months which is about 4000-4500 miles. That works out to once before winter, once after winter, and once sometime during the summer.
However the best advice has already been given. Get on oil analysis after your second change (NOT the 1st synth fill) at make your own interval. Make sure your first synth fill is a normal interval beacuse it can clean out the build up of conventional oil deposits.
For example the wife's car goes the same 4-5 months but that is 8-10k miles. Both oils analyze close after the same time period but significantly diferent miles and types of driving.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Joined: Apr 2004
Posts: 540
Veteran CEG\'er
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Veteran CEG\'er
Joined: Apr 2004
Posts: 540 |
No, you're missing my point entirely. I agree completely with what you are saying. What I am trying to convey is: I run the oil through the course of the year. As time progresses the pH level drops. As you know when the pH drops below 7.0 you are acidic. If I let it sit over the winter before my next oil change, the acidic nature of the oil will start tend to corrode (admittedly not to the point of burning a hole in the block) metals in contact with it. I change it at the end of the year so that clean, new oil is what sits in the engine over the winter. Does that better explain my point?
'98 SVT Red/midnight blue - a few mods
E0 wheels for sale - PM me
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