This was from last nights auto class, The topic was about motor oil. We were showed a valvoline motor oil tape that was probobly 15 years old. after viewing the tape, our teacher told us a story when he used to work for a local Range Rover dealer for about 15 years. They used pennzoil motor oil and had nothing but problems with sludge and varnished on those Range Rovers. And they finally switched to Chevron and never complained since. I know this isn't an issue with pennzoil but for the Teacher to say something like that to our class just gave me goosebumps. And he said he personally used M1
Auto teacher steered class from using pennzoil
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I thought you said he was a teacher
How's that old saying go? Those who can't do, teach? At least he had the sense to endorse M1.
Ok, he's a teacher...so what did he teach about motor oil? (Excluding anecdotal stories).
there are always people who will spread old wive's tales...
maybe it was true, I can't guarantee pennzoil from the 60's, 70's, and 80's but I can assure you pennzoil is okay today...
maybe it was true, I can't guarantee pennzoil from the 60's, 70's, and 80's but I can assure you pennzoil is okay today...
I'll see his 15 years and raise him 30. 30 years using Pennzoil almost exclusively and no sludge or varnish problems.
When I was a kid back in the late 70's-early 80's, my father was an auto mechanic; He ran a Citgo Full-Service gas station/garage.
He must have told me 100 times that Penzoil would sludge up an engine. I don't remember what his reasoning was, but it probably had something to do with a loyalty to Citgo oil??? I wish I could ask him.
FWIW, Penzoil seems to be highly regarded here at BITOG. I've never used it, just because I can't get that image of my Dad saying
to Penzoil out of my mind. I loved my Dad & wouldn't want to dissapoint him.
He must have told me 100 times that Penzoil would sludge up an engine. I don't remember what his reasoning was, but it probably had something to do with a loyalty to Citgo oil??? I wish I could ask him.
FWIW, Penzoil seems to be highly regarded here at BITOG. I've never used it, just because I can't get that image of my Dad saying
He shouldn't be saying that. But at the same time, I would never support any company that let me down in the past either (assuming that his claim is at least somewhat valid!).
Pennzoil and Quaker State had serious problems 15-20 years ago. I'd say that he is not that far off. It might be ok now but...
I know a guy that builds one off motors for a living and won't touch M1 because the oil caused cam failures when it first came out. Yes it was a long time ago but it caused him to lose a bunch of money, and once a product burns you you usually don't go back to it.
I know a guy that builds one off motors for a living and won't touch M1 because the oil caused cam failures when it first came out. Yes it was a long time ago but it caused him to lose a bunch of money, and once a product burns you you usually don't go back to it.
When I was in vocational school (diesel mechanics) back in the 70's we were taught the same thing. I repeated this story many times even though I never saw a case of sludging myself.
It's unfortunate that many people also heard and believed the same story. Since I've been working in the oil lab (11 years now) I've not seen any evidence to support this claim.
Stinky
It's unfortunate that many people also heard and believed the same story. Since I've been working in the oil lab (11 years now) I've not seen any evidence to support this claim.
Stinky
Nowadays I think most of the problems with oil are from neglect. I honestly think most people never change their motor oil until there is a problem like it won't pass a smog check or something. I've pulled a lot of motors apart that had oil that looked like pudding. They just drive them until they quit then get another one. I just could never bring myself to do such a thing to one of my cars.
This reminds of cam failures on GM 305 cid small block engines back in the early 80's, lobes would wear out and engine would start running poorly. They were all blaming oil as the problem and none in particular. It was many years that its was revealed that a cam shaft suppiler to GM had used inferior castings on thousands of Cams. I know one guy that had 3 of them go bad in
[ February 08, 2005, 09:57 PM: Message edited by: Mike ]
I was told once that some sort of EGR failure caused early cam wear on 305 and 350 SBC's.
When I was in Driver's Ed, they had us on a drivers simulator that was 15-20 years old. That has as much usefulness to my day-to-day driving as your "teacher" taught about Pennzoil.
I have Pennzoil SM dino in the crankcase now and it performs much better than most dinos and reduces NVH almost as much as M1. Pennzoil is great stuff. Your teacher needs to remove himself from 1985.
I have Pennzoil SM dino in the crankcase now and it performs much better than most dinos and reduces NVH almost as much as M1. Pennzoil is great stuff. Your teacher needs to remove himself from 1985.
I've used Pennzoil since 1985 and haven't had a problem.
The bad Chevy cams were from poor heat treating.
I would confront the teacher, and ask if one hearsay experience is good enough to warrant becoming an expert. Does that logic apply to anything else in the universe?
If you get any questions wrong on any of his exams, just say that you heard the answer was otherwise, hence, you are the expert, now!
I would confront the teacher, and ask if one hearsay experience is good enough to warrant becoming an expert. Does that logic apply to anything else in the universe?
If you get any questions wrong on any of his exams, just say that you heard the answer was otherwise, hence, you are the expert, now!
So if you wipe a couple of cam lobes the FOD will take out the bearings 43.4 percent of the time. And if the engine runs to low on oil it will fail 16.6 percent of the time. Cool.
The teacher didn't lecture us too much about motor oil, I don't think he had the knowledge to do so, He just showed us the valvoline tape and told us a little story at the end about the pennzoil problem, He worked for Range Rover for the past 15 years up until about 2 years ago when he started teaching.
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