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Old 05-16-2012, 07:23 AM   #1
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New Neighbor Said: "You're killing your engine"...thoughts?

I recently moved to southern california (woodland hills) and had to stop at my neighbors house when i saw he was cleaning his 996. Beautiful car...pristine.

We started into the typical "Porsche talk" and he asked what kind of engine oil i put in my car('97 2.5, 105k mi)...he said "its 0-40, right?" I said "no, i just changed the oil and put in mobil 1 10-40, high mileage". He then proceeded to tell me that, not only was i robbing myself of horsepower (not a big deal to me...not at price of longevity), but i was going to eventually make it seize as the viscosity is too thick.

Sounds a bit extreme to me. I would think that 10 weight oil, being a little thicker, would give better protection and stick to gears longer...and i know a few of you are using it. Am i wrong? I'd hate to have to change my oil again, as i did it yesterday, but if i need to, i will.

Please, any thoughts?


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Old 05-16-2012, 07:58 AM   #2
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I'm not an oil expert, but i use 0w in the winter, 5w in summer from reading this forum. A lot of people seem to have moved away from mobile 1 as well, but I still use it.
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Old 05-16-2012, 08:31 AM   #3
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Sounds a bit extreme. Lots of people have lots of opinions about oil. Just because a guy spent more $$ on his car doesn't mean he knows stuff.

My take: Use a full synthetic oil and change it every 4-5K miles. Any quality oil between 0-40 to 10-50 will not destroy your car.

My personal choice- Castrol Syntec 5w40
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Old 05-16-2012, 08:31 AM   #4
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Once your engine is fully warmed up (180+) you're both running 40 weight oil so unless Hi-mileage is not full synthetic there is no horsepower difference & your neighbor is not a oil expert either. Search this forum for oil info.

Whats the best bar in Pismo Beach?

Last edited by BYprodriver; 05-16-2012 at 08:33 AM. Reason: curious
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Old 05-16-2012, 08:33 AM   #5
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Does not go below zero in "Woodland hills, so you're fine with the weight you chose. Some even suggest the change you made is actually better for the M96, I can't see it being an issue.
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Old 05-16-2012, 09:05 AM   #6
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Since your in California and does not reach sub-freezing temp. its okay to use 10W, 15W or 20W oil weight. I use Castrol 10W40.
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Old 05-16-2012, 09:48 AM   #7
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Originally Posted by anti-bling View Post
I recently moved to southern california (woodland hills) and had to stop at my neighbors house when i saw he was cleaning his 996. Beautiful car...pristine.

We started into the typical "Porsche talk" and he asked what kind of engine oil i put in my car('97 2.5, 105k mi)...he said "its 0-40, right?" I said "no, i just changed the oil and put in mobil 1 10-40, high mileage". He then proceeded to tell me that, not only was i robbing myself of horsepower (not a big deal to me...not at price of longevity), but i was going to eventually make it seize as the viscosity is too thick.

Sounds a bit extreme to me. I would think that 10 weight oil, being a little thicker, would give better protection and stick to gears longer...and i know a few of you are using it. Am i wrong? I'd hate to have to change my oil again, as i did it yesterday, but if i need to, i will.

Please, any thoughts?
If there is anything "too thick" here, it is your neighbor........................
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Old 05-16-2012, 09:49 AM   #8
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if there is anything "too thick" here, it is your neighbor........................
lol Very funny
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Old 05-16-2012, 09:59 AM   #9
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If there is anything "too thick" here, it is your neighbor........................

And his font of course
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Old 05-16-2012, 10:30 AM   #10
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10w-40 is the perfect oil weight for the temperature ranges here in LA. You will definitely not destroy your engine.

Mobil 1 High Mileage has a more extensive anti-wear and seal conditioning package than regular Mobil 1.
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Old 05-16-2012, 10:54 AM   #11
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the first number is cold weight, the second weight at temperature. colder regions require a lighter cold weight so that the oil has adequate fluidity during a cold start. once to temp all else is equal. in warm temperatures the cold weight is really moot, except - ask your neighbour if he worries about his chain tensioner paddles at all; with that runny oil of his all the oil runs back down to the bottom of the engine so on a cold start the chain is flapping against a dry paddle - does he see a lot of green black chunks of plastic in his oil filter?
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Old 05-16-2012, 11:30 AM   #12
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Thats the same oil I use... The oil galleys in the M96 engine are huge and will probably flow almost anything.
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Old 05-16-2012, 11:35 AM   #13
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but i was going to eventually make it seize as the viscosity is too thick.
You only gonna seize the engine if you ran out of oil in the crankcase, just like what happened to my co-workers sister 80's Supra the engine is so seized the crankshaft wont rotate using a breaker bar.
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Old 05-16-2012, 12:19 PM   #14
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10-40 is a great weight for your climate, especially summer time. As a matter of fact, I feel that using 0w or even 5w would be too thin. Down here in Texas, with hot ass temperatures of 93F+ a day and three months straight of 100F+ we have Porsche enthusiasts that use 15w-20w-40-50. I personally use 10w-40 high mileage in my car, and have never had a problem. Was actually looking to see if I could find me some 15w-50.
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Old 05-16-2012, 12:23 PM   #15
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If there is anything "too thick" here, it is your neighbor........................
.....hahahhahahahahahahahaha

Thanks all! You guys rock
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Old 05-16-2012, 12:59 PM   #16
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If there is anything "too thick" here, it is your neighbor........................
He might think you're complementing his.... never mind...
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Old 05-16-2012, 04:51 PM   #17
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Originally Posted by BYprodriver View Post

Whats the best bar in Pismo Beach?
I live 15 minutes from Pismo, Harry's is a fun bar and it's close to the beach.

http://www.qualitysites.com/Harrys/
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Old 05-17-2012, 04:42 AM   #18
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I am tired of opinionated people especially when their opinion is not asked for. Your neighbor has been outvoted by members of this forum. That's my opinion anyway
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Old 05-17-2012, 06:54 AM   #19
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I always just BYOB to the dunes when I used to live up that way
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Old 05-17-2012, 09:28 AM   #20
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10-40 is a great weight for your climate, especially summer time. As a matter of fact, I feel that using 0w or even 5w would be too thin. Down here in Texas, with hot ass temperatures of 93F+ a day and three months straight of 100F+ we have Porsche enthusiasts that use 15w-20w-40-50. I personally use 10w-40 high mileage in my car, and have never had a problem. Was actually looking to see if I could find me some 15w-50.
I run either 15W-50 in the winter and 20W-50 in the summer.

Mike

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