5w20 experiment coming to a close soon

[G-MAN]

We saw how well regular Pennzoil 5w20 did in my Chrysler, and Johnny was kind enough to donate a case of 5w20 synthetic for comparison. That part of the "experiment" will be coming to a close soon.

As a follow-up, I thought I'd go the other direction and see how a 10w40 does in comparison. What do you guys think?

 

[ToyotaNSaturn]

G-man, I'd like to see Pennzoil 5w-40 synthetic as a comparison. We just don't see much of this oil on this board.

Don't forget, since you used Pennzoil, check those valve covers for sludge! Now, and at 400,000 miles.

 

[cryptokid]

pennzoil 5w40 synthetic is so rare that it is not an option for most people. therefore i would recomend texting somthing that everyone can easily purchase, like the aformentioned 10w40, or even the 15w40 long life perhaps

 

[haley10]

Thank you for all your efforts and I look forward to seeing the results.

I personally don't have a lot of interest in the 10W-40. I have a forgone conclusion that you will see some sluggishness and reduced fuel economy with no better wear. Maybe you can prove or dis-prove this.

My Mitsu 4 banger and GM 3800 Series II just don't like the 40 wts., so even if wear was zero, I won't go there. I don't won't to be bogged down especially on the 2.0L 4-cyl. It likes the PZ 30's noticeably. I ran Castrol 10W-40 Syntec at only 13 cst or so (don't remember exact #, but lite) and it slugged up some in the V-6.

I think testing the PZ HM Blend @ about 12cst in 10W-30 would be very, very interesting. I would really like to see that and I think it could benefit many with older engines with isssues while still being fine for new ones.

Any interest in the HM 10W-30???

Kinda the PZ dino version of GC me thinks.

[ December 06, 2004, 02:13 PM: Message edited by: haley10 ]

 

[427Z06]

Thanks for sharing your data. I'd like to see how one of the new GF-4 5w30 compares, especially Motocraft 5w30. Let's see if the improved basestock and lower phosphorus of an GF-4 is up to the task.

 

[haley10]

quote:

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Originally posted by 427Z06:
Thanks for sharing your data. I'd like to see how one of the new GF-4 5w30 compares, especially Motocraft 5w30. Let's see if the improved basestock and lower phosphorus of an GF-4 is up to the task.

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Good point, but I think we wil start to see a lot of that anyway. I will post one of these in the future on Motorcraft in GF-4 in the Ford modular. I bet we'll get lot's.

I want to see the PZ data.

 

[Yuk]

quote:

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Any interest in the HM 10W-30???

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Patman has brainwashed me, go for HM 5W-30 instead. I have no numbers to back me up, but I think 5W-30 is more relevant to most dino users these days.

 

[427Z06]

quote:

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Originally posted by haley10:

quote:

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Originally posted by 427Z06:
Thanks for sharing your data. I'd like to see how one of the new GF-4 5w30 compares, especially Motocraft 5w30. Let's see if the improved basestock and lower phosphorus of an GF-4 is up to the task.

---

Good point, but I think we wil start to see a lot of that anyway. I will post one of these in the future on Motorcraft in GF-4 in the Ford modular. I bet we'll get lot's.

I want to see the PZ data.

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Yeah, but with those aluminum bearings in a Ford Modular, you really can't tell much about bearing wear.

 

[JohnBrowning]

G-ManII I would like to see a 15W40 instead of 10W40. I think you can get a better oil that way!

 

[G-MAN]

quote:

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Originally posted by JohnBrowning:
G-ManII I would like to see a 15W40 instead of 10W40. I think you can get a better oil that way!

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I think it gets a little too cold here during the winter months for a 15w40 in my engine. I'd be concerned about cold start lubrication to my overhead cams.

 

[69 Riv GS]

G-Man, I assume you're staying with Pennzoil?
If so, I feel that it's a more fair comparison to use the 5w-40 synthetic. It should have a more comparable base oil blend to your "reference oils", and an SAE 5w cP viscosity; - same as two of your three "test" oils.
Sure the 5w-40 can be a little difficult to locate,
but any store that carries Pennzoil can order it for you!

 

[JohnBrowning]

G-ManII, I agree. I was thinking maybe in spring!

 

[haley10]

quote:

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Originally posted by 427Z06:

quote:

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Originally posted by haley10:

quote:

---

Originally posted by 427Z06:
Thanks for sharing your data. I'd like to see how one of the new GF-4 5w30 compares, especially Motocraft 5w30. Let's see if the improved basestock and lower phosphorus of an GF-4 is up to the task.

---

Good point, but I think we wil start to see a lot of that anyway. I will post one of these in the future on Motorcraft in GF-4 in the Ford modular. I bet we'll get lot's.

I want to see the PZ data.

---

Yeah, but with those aluminum bearings in a Ford Modular, you really can't tell much about bearing wear.

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This is very true. I can't tell enough to even engage in the great 5-20/5-30 debates on this one. I know it would be heresy to put Motorcraft in a GM, but I've thought about it.