GC Too thick?

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And here is the data to create that curve...now GC starts to become thicker then M1 10W-30 only after temperature of 20C which I would not consider a cold start!

TEMP M1 0W-40 GC 0W-30 M1 10W-30
-20 2661.5 2609.0 3424.8
-10 1197.8 1127.1 1332.9
0 599.3 546.6 595.7
10 327.6 291.8 298.3
20 192.9 168.8 164.1
30 121.0 104.4 97.6
40 80.0 68.4 62.0
50 55.4 47.0 41.6
60 39.8 33.7 29.2
70 29.7 25.0 21.4
80 22.7 19.1 16.1
90 17.8 15.0 12.5
100 14.3 12.0 10.0
110 11.7 9.8 8.1
120 9.8 8.2 6.7
130 8.2 6.9 5.7
140 7.0 5.9 4.9
150 6.1 5.1 4.2
 
quote:

Originally posted by zoomzoom:
And here is the data to create that curve...now GC starts to become thicker then M1 10W-30 only after temperature of 20C which I would not consider a cold start!

TEMP M1 0W-40 GC 0W-30 M1 10W-30
-20 2661.5 2609.0 3424.8
-10 1197.8 1127.1 1332.9
0 599.3 546.6 595.7
10 327.6 291.8 298.3
20 192.9 168.8 164.1
30 121.0 104.4 97.6
40 80.0 68.4 62.0
50 55.4 47.0 41.6
60 39.8 33.7 29.2
70 29.7 25.0 21.4
80 22.7 19.1 16.1
90 17.8 15.0 12.5
100 14.3 12.0 10.0
110 11.7 9.8 8.1
120 9.8 8.2 6.7
130 8.2 6.9 5.7
140 7.0 5.9 4.9
150 6.1 5.1 4.2


I guess it depends on what you consider cold starts. Here in Illinois 20C would probably cover about 1/2 of the morning starts in a year. And even in the cold months I suspect the oil will get to 20C pretty quickly.

I *maybe* notice a bit of warmup roughness in my Toyota after going from M1 5W-30 to GC but honestly, I couldn't care less. I doubt my engine cares either...
wink.gif
 
quote:

Originally posted by zoomzoom:
And here is the data to create that curve...now GC starts to become thicker then M1 10W-30 only after temperature of 20C which I would not consider a cold start!

I dont think it ever gets under 20C (68F) here after May.
 
This is kinda funny, i actually wish GC was a little thicker at operating temps, around 13.5@100 would be perfect for me
smile.gif
 
Pulled off the oil filter, it was **** near dry inside. Little trickle as I pulled it off the block and thats it.

New filter on, started it once to get pressure up, then shut it off and waited 30 minutes. Problem seems to have been taken care of.
 
Hamp filter.

Its orientation is horizontal on the back of the block (inline four). It usually makes a ******* mess when it comes off... its fun to burn your arm on hot exhaust manifold and get oil in your armpit at the same time!
 
hey, while we're all still active in this thread...

Has anyone seen the new Castrol Syntec 5-20?...any opinions on it?
 
quote:

This is kinda funny, i actually wish GC was a little thicker at operating temps, around 13.5@100 would be perfect for me

I don't know if it would cause any problems, but if you did a 3:2 mixture of GC and Delo 15w-40 it would give you 13.6 @ 100.
 
quote:

Originally posted by pmt:
GC 0W-30 is strange stuff when it comes to consumption. My family has tried it in two cars vs. the M1 5W-30 previously used in each car for many miles. In my son's 1997 Firebird (3.8L engine, about 100,000 mi) he had noticably less consumption with the GC 0W-30. But in my wife's 1977 Grand Prix, (5.0L V-8, about 125,000 mi) it is consuming a fair amount more of the GC 0W-30 than it did with M1 5W-30. Hard to figure.

A good friend of mine has a 98 LS1 Camaro with 125,000 miles on it. He was burning 1qt of oil every 3000 miles when he was using Mobil 1 5w30. After he took my advice and went to GC, he now reports he uses less than 1/4qt every 3000 miles!
 
QUOTE]A good friend of mine has a 98 LS1 Camaro with 125,000 miles on it. He was burning 1qt of oil every 3000 miles when he was using Mobil 1 5w30. After he took my advice and went to GC, he now reports he uses less than 1/4qt every 3000 miles! [/QB][/QUOTE]

I have a Mazda tribute V6. Mobil1 0W-40 would be down a half quart at 5k miles. GC 0W-30 remains full at 5k interval.

First change to GC, it took several tank fulls before any change was noted. Then hiway mileage increased from average of 21 to 22 to 23.
Gasoline was mostly Shell, oil filter is Mobile 1.
 
quote:

Originally posted by RJ_ITR:
Hamp filter.

Its orientation is horizontal on the back of the block (inline four). It usually makes a ******* mess when it comes off... its fun to burn your arm on hot exhaust manifold and get oil in your armpit at the same time!


Let me guess, Honda Civic, right? Accord maybe? This sounds suspiciously similar to my wife's Civic. What a royal PITA to get that filter off. They couldn't have made it any harder to reach if they tried.
mad.gif
 
quote:

I'm getting alot of NVH (including some light knocking) from the motor, and it doesnt seem to want to rev up at all. If i tip the throttle just a bit (to 1500rpm) and then let off quickly, the RPM will drop down below idle, and seems like the motor wants to stall before it comes back to correct idle speed.

Your description does sound like a fuel delivery related problem and most likely an idle air control valve problem in closed loop. Have you also checked the EGR to see if it is stuck partially open?

I have seen things happen coincidentally when or after changing oil that had no relation to the oil at all.
 
quote:

Originally posted by MolaKule:
Your description does sound like a fuel delivery related problem and most likely an idle air control valve problem in closed loop. Have you also checked the EGR to see if it is stuck partially open?

My IACV is functioning properly, as I already said. And the car doesnt even have an EGR.

quote:

I have seen things happen coincidentally when or after changing oil that had no relation to the oil at all.

Problem is already solved....... scroll up, culprit was a bum oil filter.
 
to thick?
confused.gif



GC was to thin for my Chevy 8.1L because it has consumption problems, likes to burn about 1-3qt's in a 5k oci on M1 10-30 with GC is sucked down almost a full sump (9qts) in a 5k oci
dunno.gif
 
quote:

Originally posted by RavenTai:
to thick?
confused.gif



GC was to thin for my Chevy 8.1L because it has consumption problems, likes to burn about 1-3qt's in a 5k oci on M1 10-30 with GC is sucked down almost a full sump (9qts) in a 5k oci
dunno.gif


GC 0W-30 is strange stuff when it comes to consumption. My family has tried it in two cars vs. the M1 5W-30 previously used in each car for many miles. In my son's 1997 Firebird (3.8L engine, about 100,000 mi) he had noticably less consumption with the GC 0W-30. But in my wife's 1977 Grand Prix, (5.0L V-8, about 125,000 mi) it is consuming a fair amount more of the GC 0W-30 than it did with M1 5W-30. Hard to figure.
 
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