Oil Consumption and Driving Condition(s)

[BISCUT]

Running 95 Camry with 2.2 liter 4 banger. Great gas mileage, mixed driving 24 MPG and highway runs at 75/80 give me 29/31 MPG.

My last OCI at 4k with PYB (all I've used in it so far is PYB) she burned minimal but still burned around 8oz. I realize this is being picky and anal but thats me. Only thing different I did was sustained 90MPH highway runs up I-91 in Vermont. I was wondering if running it like that was considered "severe" RPM is around 3100/3200 at that speed.

I'm not complaining just got me wondering if high speeds like that make a difference? A signifigant difference? Or should I just shut up and leave it be!!

 

[Astro14]

8 oz in 4,000 miles?

That's not a problem!! That's great!!

All engines use oil...it's a matter of degree...and if you're using 1 QT of oil in 16,000 miles, you're better than very other car on the road...

 

[skyship]

Originally Posted By: BISCUT
Running 95 Camry with 2.2 liter 4 banger. Great gas mileage, mixed driving 24 MPG and highway runs at 75/80 give me 29/31 MPG.

My last OCI at 4k with PYB (all I've used in it so far is PYB) she burned minimal but still burned around 8oz. I realize this is being picky and anal but thats me. Only thing different I did was sustained 90MPH highway runs up I-91 in Vermont. I was wondering if running it like that was considered "severe" RPM is around 3100/3200 at that speed.

I'm not complaining just got me wondering if high speeds like that make a difference? A signifigant difference? Or should I just shut up and leave it be!!

Did you ask the cops for an opinion on your oil consumption??

3000 rpm is just cruise and not severe duty for such an engine, but it could be different in oil leak terms to in town driving.

 

[JHZR2]

Doesnt sound abnormal at all. Ill bet the engine is spinning pretty fast at 75-80. Ive found that consumption is higher at faster engine speeds. But if youre saying that you are only at 3100ish RPM even at 90 MPH, I really dont think that high speed driving RPMs are even a concern for that car.

 

[ABerns]

In general, high RPMs can increase oil consumption, usually from worn rings. For instance, my old Honda motorcycle would burn oil anytime I was cruising above 6k RPM, which was about 70 MPH.

Now, does 3100 RPM sound high enough to increase oil consumption? On the surface I'd say no, but I don't know anything about these vehicles.

 

[gregoron]

My Jetta 2.0 consumes around 1qt per 1000-1500 miles. I'm at 3500 rpm going 70 on the hwy. It runs smoothly though at higher speeds than at 60. I wouldn't worry about it in your case as long as you follow regular OCI and use OEM or quality filters.

 

[BISCUT]

I was able to open it up last night on a good stretch of highway. 90MPH was 3250/3300RPM at 100MPH it jumps to 4kRPM. Red line is 6250...


I sure wasn't complaning that a few ounces of oil were no longer there but it did get me wondering if high speeds or high RMP would have something to do with it.

 

[Danh]

I think driving conditions do affect oil consumption; high-speed highway driving in particular can be a contributor.

While oil temperature is kept in a range by the car's cooling system, it tends to be higher when the engine is working consistently harder, as it would be with high speeds, hil climbing, towing, etc. Higher oil temperatures make the oil "thinner", which can allow it to find its way past rings, valve seals and the like. Higher oil temps also encourage oil loss through evaporation.

None of this suggests your oil consumption is a problem or reflects abuse of the machinery.

 

[fdcg27]

It sounds like the speedo is accurate at 100 mph, and reads way high at an indicated 90 mph.
25 mph/thousand in top sounds about right for a mid-nineties Japanese 4 cyl sedan.