c_rossman - I think you did the right thing by changing out. Did you save a sample for analysis?
Dont Mix Delo with Pennzoil 5w20
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Do the oil companies post a warning not to mix one brand of oil with another? How about mixing same brand of synthetic with its non-synthetic fellow brand-mates? How much mix is dangerous? How about gasoline? If I fill up with Shell premium when my tank contains a quarter full of Texaco regular, will my fuel system become plugged-up? Do these different brands of gasoline contain different types of additive. How about the oils?
Sorry, but I can't believe that mixing one brand of oil with another causes a problem. The companies know that people will do that out of ignorance or necessity or whatever. If it causes problems and they know it and don't take action to abate or mitigate the problems, or post warnings, then they may be liable and they don't want that to be the case.
My $0.02
Sorry, but I can't believe that mixing one brand of oil with another causes a problem. The companies know that people will do that out of ignorance or necessity or whatever. If it causes problems and they know it and don't take action to abate or mitigate the problems, or post warnings, then they may be liable and they don't want that to be the case.
My $0.02
I am sticking with my water theory ..you have something wrong with you engine ...( headgasket, crack in the head crack in the block ...I have seen the grey oil before ....I used to have a .......gremlin when i was 16 it did the same thing .
THis is really strange. I have been putting partial quarts of oil into a common jug for years and never had a problem. I use this oil as top off,old beaters, auto-rx,lawn and tracor eqipment etc... I have never seen this happen. I currently have a jug that has two quarts of SuperFlow and partial quarts of the following: M1 10W30, M115W50,Syntecblend 15W50, Chevron Supreme10W30, old Equilion(sp) Havoline Synthetic 10W30,Pensoil 15W40 LL amd Delvac 1300. It is a 5 qt. jug and I often end up with 1/3 to half a quart left over. I hate to have bottles that low just lying around so I dumb them in a common jug. I just dumb them in and give it a shake. To date no seperation.
This is really odd!
This is really odd!
Years ago manufactures said NO to mixing engine oils from different manufactures. Same for transmission oils because of additive package differences could/will cause problems. Today manufactures say NO to only transmission/differental oil mixing. I don't want to mess up by taking a chance; because manufactures are yearly reformulating new additive packages so I don't mix. ed
Great, now we need to do a "crossmatch" before attempting any oil "transfusion"...
yeah, but he has some of the same mixture sitting on his shelf for the last 2 weeks and its got the gray precipitate sitting on the bottom. strange osmosis when it jumps from a bad engine to the shelf. on the other hand, when he was mixing oils just to get rid of them, one of the containers could have been previously opened, and who knows what put into it. that is the theory i am subscribing to. one of the oil containers was contaminated by non-oil stuff. i figure by now some enterprising individual has already mixed 5w-20 pennz and 15w-40 delo and is unable to recreate the gray crappola.
He's got three strikes against him
:
1) Mixing different companies' oils.
2) Mixing PCMO with HDMO.
3) Mixing widely different grades.
Still it doesn't seem like this should have happened. This is an abnormal situation. As suggested above, someone needs to get new bottles of these two oils, mix them, and see what happens.
BTW, I do sometimes mix. Have a jar of 50/50 Redline/Maxlife sitting on a shelf for the last week. So far, nothing weird.
[ September 05, 2004, 12:38 AM: Message edited by: TallPaul ]
1) Mixing different companies' oils.
2) Mixing PCMO with HDMO.
3) Mixing widely different grades.
Still it doesn't seem like this should have happened. This is an abnormal situation. As suggested above, someone needs to get new bottles of these two oils, mix them, and see what happens.
BTW, I do sometimes mix. Have a jar of 50/50 Redline/Maxlife sitting on a shelf for the last week. So far, nothing weird.
[ September 05, 2004, 12:38 AM: Message edited by: TallPaul ]
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This is the likely cause. Something else is in the oil and is therefore in the engine.
Yes, the blending will be complete, but has it aged enough? This is the secret to the "special blend" (visions of Johny Walker Blue label)
MolaKule
Staff member
Just yesterday I made a 50/50 mix of Pennzoil 5W20 and Delvac 1300 and put the mix into a 1 liter clear HDPE bottle. I also mixed 50/50 Pennzoil 5W20 and Delo 400 into a another liter bottle and put them in my blending shed to "cook."
We'll see if anything settles out.
Personally, I have never seen aything settle out and I have tested some pretty radical mixtures in the past!
We'll see if anything settles out.
Personally, I have never seen aything settle out and I have tested some pretty radical mixtures in the past!
Was the jug in which you made the mixture originally clean?
Were all the oil containers clean?
Intriguing, but I think there might be something else afoot here...
mr
Were all the oil containers clean?
Intriguing, but I think there might be something else afoot here...
mr
Well I just rolled back into town, I just want to say the truck is running good, pulling a heavy load . I just checked the oil and there was no grey stuff on the dipstick. Ever notice the pennzoil 5w20 is so dark. Well to answer some of your questions. The 5qt jug of pennzoil 5w20 was never opened. I had two gallon jugs of delvac and delo on the shelf that were open about a month. One had about 1.5 qts in it and the other 1 qt. I mixed them but Did not check for anything in the bottoms of the jugs. Its not water I know that because when I wipe my finger in the stuff its stays on there like a graphite powder. I hope your experiments turn out the same.
Thanks Mola' I was gonna stop by the store to buy a qt of each, but I was outvoted by the entire female delegation.......and somehow they knew exactly what I was up to....I think they've been lurking....anyhow you saved me a couple bucks!
See my post from 09/04 this thread. I'm not going to experiment with engine oil mixing with my 3,000 dollar engine. If I want to experiment I'll use my 200 dollar lawn mower. My engine will not be used for experimenting so it just get clean, unopened bottles of same brand same viscosity oil. Results are an enjoyable ride without stress over whether my secret mix or blend is doing damage. ed
MolaKule
Staff member
Not the stuff I have. This Pennzoil is a light color, I would say in fact, Bright-Yellow to Yellow-Amber. Definiately a 5W20 in viscosity.
Are you sure it was the Pennzoil 5W20?
The next time you guys see a wierd situation like this, please sample and have it analyzed, and note the conditions discovered and the variables in the situation.
MolaKule
Staff member
Day 5 and still no signs of any greyish settling.
I am beginning to think something became contaminated after opening.
I am beginning to think something became contaminated after opening.
I don't even mix grades of the same brand, but I don't think his problem is mixing.
I mixed 5 quarts of Delo400, 5 of Redline 10W-40, 5 of M1 0W-40, and 5 of Delvac 1 (SH), and when I emptied the drum, found a layer of grey black lumpy sludge.
All oils had seen 10,000km of use, and the drum was left open for 18 months.
(sorry, just had to add this)
All oils had seen 10,000km of use, and the drum was left open for 18 months.
(sorry, just had to add this)
I purchase a virgin bottle of Pennzoil 5w20 today, I emptied it into a jar. The bottom of the bottle had a grey/black silt type material on the bottom. Very simular to the stuff found earlier but not as abundant.
I hate to be el stupido about this, but have you contacted Pennzoil?
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