GT350 Engine/Oil Usage/Fix thread.

[Minn19]

People need to realize that the voodoo uses low tension piston rings.

Yes sir Ding Ding and driving high rpm with no load will not keep the rings seated and they will flutter and allow oil to get by!

So in your guys opinion, what is an acceptable amount of oil usage for the Voodoo? And does it matter if it is a stable amount or if it keeps getting worse is this still normal according to you guys?

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[MCarsFan]

I think 1 liter per 1000 mile is normal for this type of engine.

 

[jamesb1986]

One thing I noticed is when checking the oil the dipstick reads lower if you insert the lettering side down. I checked 3 times, if i rotated the stick 180 degrees and checked so the lettering was up when I inserted it was over the thru hole on the top. Flip it 180 so lettering is down and reading was right in the middle.

This explains why I had trouble getting the same reading twice on occasion. I have never had trouble getting an oil level reading before :headbonk:

 

[Minn19]

I think 1 liter per 1000 mile is normal for this type of engine.

Ford has told me a quart per 1500 miles, but I haven't seen any official documentation to back up what I've been told from a couple of sources.

 

[goodkid]

Yes sir Ding Ding and driving high rpm with no load will not keep the rings seated and they will flutter and allow oil to get by!

Sorry. "High RPM with no load" means what, exactly?

 

[kairojya]

Sorry. "High RPM with no load" means what, exactly?

I believe it means part throttle or decel (engine braking) while high in the rev range

 

[machsmith]

When your in a RPM range and your touching the throttle to keep it there instead of planting your foot and constantly CLIMBING RPM..and not going down a hill. Haha

 

[Agent_S550]

Sorry. "High RPM with no load" means what, exactly?

Load: Riding in fourth gear, going about 35. You floor it/aggressively hit the gas. The car will have to pull through the lower RPM's and fight it's way to get to the power band.

Much less load: Going 35 also. When you go to accelerate, rather than accelerate in fourth, you down shift to second and rev the car up, therefore making it easier on the engine to accelerate. You mitigate load by introducing more RPM and putting the motor in it's "Sweet spot" of power.

It's important to introduce and move all around the power band. I enjoy the feeling of modular ford cars being under the gun and pulling themselves out of the hole. I like to give it the nuts while in fourth at about 40. It's not in the power band and the car has to respond to the throttle. It's a guttural "Dig yourself out of a hole" kind of acceleration that keeps me addicted to these cars. Same goes for Turbo's.

 

[Offboost]

Sorry. "High RPM with no load" means what, exactly?

Driving around in 2nd/3rd gear at 4000 RPM all the time to listen to the beautiful exhaust note. The engine is spinning very fast but is under no load (the throttle is just opened enough to maintain the higher rpms) if the car was upshifted and the rpms dropped down because of the taller gearing the same amount of throttle with higher load creates additional load on the pistons the combustion process will push harder on the pistons and results in the combustion gasses getting behind the back side of the rings and pushes the rings tighter against the cylinder walls thus creating a much tighter seal.

The low tension rings are used in most modern engines to help with mileage and free up additional hp from less internal engine friction.

 

[Offboost]

Ford has told me a quart per 1500 miles, but I haven't seen any official documentation to back up what I've been told from a couple of sources.

I think the amount will vary based on driving style etc one thing to consider is with modern engines they are truly not broken in a 1000 miles. I think everything is seated and polished but I think the cylinder walls etc are so hard that it may take 10000 miles to fully break in as BMW notes in there service bulletin. Yes I realize this is not a BMW but a Ford engine.

To truly know how much oil you are using in a 1000 miles you need to fully drain the engine oil. measure and weigh 10qts of oil and put it in the engine drive the vehicle a thousand miles and drain and capture all of the oil without spilling it and measure and weigh it again and see what was actually consumed.

If there is truly a issue with the engine it would show up during leak-down and compression test and there would also be large clouds of smoke coming out of the exhaust. Catalytic convertors do a good job of eliminating smoke but they cannot prevent a car with a bad piston or cylinder wall from not smoking.

 

[machsmith]

Load: Riding in fourth gear, going about 35. You floor it/aggressively hit the gas. The car will have to pull through the lower RPM's and fight it's way to get to the power band.

Much less load: Going 35 also. When you go to accelerate, rather than accelerate in fourth, you down shift to second and rev the car up, therefore making it easier on the engine to accelerate. You mitigate load by introducing more RPM and putting the motor in it's "Sweet spot" of power

I tend to do the the lower gear higher RPM because of 91 premium. Flooring or leaning into it heavy at 35 in 4th it is going to have detonation/pinging with the 91octane in there. I've used 93 ethanol in my other cars and had less...zero in most cases. Victims of 91 premium most places around here.

 

[kairojya]

Driving around in 2nd/3rd gear at 4000 RPM all the time to listen to the beautiful exhaust note. The engine is spinning very fast but is under no load (the throttle is just opened enough to maintain the higher rpms) ....

Interesting. On my weekend back road drives I do a fair bit of this when I'm cruising between twisty sections. Though generally I'm in 3rd/4th around 3000 RPM I believe.

 

[Minn19]

I think the amount will vary based on driving style etc one thing to consider is with modern engines there are truly not broken in a 1000 miles. I think everything is seated and polished but I think the cylinder walls etc are so hard that it may take 10000 miles to fully break in as BMW notes in there service bulletin. Yes I realize this is not a BMW but a Ford engine.

To truly know how much oil you are using in a 1000 miles you need to fully drain the engine oil. measure and weigh 10qts of oil and put it in the engine drive the vehicle a thousand miles and drain and capture all of the oil without spilling it and measure and weigh it again and see what was actually consumed.

If there is truly a issue with the engine it would show up during leak-down and compression test and there would also be large clouds of smoke coming out of the exhaust. Catalytic convertors do a good job of eliminating smoke but they cannot prevent a car with a bad piston or cylinder wall from not smoking.

Thanks for the response. This I where I wish Ford/FP would communicate with the customer and dealer more for that matter. I am being very reasonable through all of this and both me and my dealer offered to help figure out what was going through a few different methods. Ford/FP always come back with don't touch it and eventually just said replace it.

I guess I could have kept it until 10000 miles, but if they were going to replace it anyway I didn't want the car in the shop for a third of my driving season next year.

Ford could really help this entire situation out by actually communicating with their dealers and customers. But, they choose not to for whatever reason.

 

[Minn19]

Interesting. On my weekend back road drives I do a fair bit of this when I'm cruising between twisty sections. Though generally I'm in 3rd/4th around 3000 RPM I believe.

Any updates on what your usage is at now? Is it stable etc?

 

[RadBOSS]

Must be something wrong with mine. Just had 3000 mile oil change and no significant usage noted.

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