Finally decided to go Synthetic!! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-12-2006, 11:39 PM   #1
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Default Finally decided to go Synthetic!!

Well, last week, Canadian tire had the sale on Mobil one SUPER SYN 10W30 motor oil jugs. 4.4 liters for 29.99 CDN. Bought 2 jugs. Also went to the dealer, and bought 2 AC delco filters.

Been ok, so far. I'm still checking for leaks, and making sure everything is good. The motor has aproximatly 140,000 kms on it, and I'm sure this is the first time synthetic has been used on it.

Oil pressure seems to be slightly higher, like 550 KPA at 1500 RPM, so that must be good. Fuel mileage seems to be slightly better. I'll know when I make a road trip, or the next time I start tracking my mileage down. Maybe i'm just imagining the fuel mileage going up everytime I add something to the car, lol.

On the down side however.. I just poked my finger through a rust hole in the rear drivers wheel well. I was hoping to NOT touch it until summertime. Sheesh! Also, the drivers side rocker panel is starting to rot through. Winter is ALOT harder on a vehicle than what I imagined. Hopefully I can permanently repair the trouble spots in the summertime to NOT worry about it next winter.

Tommorrow, gotta renew the registration, 89 dollars. Yikes, owning a car is expensive for a 19 year old..
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Old 02-12-2006, 11:42 PM   #2
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I changed to synthetic at 233000 klm in my 90sse and it has been fine , for some reason it just feels good.
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Old 02-13-2006, 12:40 AM   #3
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Synthetic is awesome stuff, mine has it in there now at 181,700 km
Its funny posting in KPA on this forum lol
I usually run aound 275 at idle and hit atleast 400-500kpa under good throttle..on a hot day i hit maybe 200 kpa
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Old 02-13-2006, 03:48 AM   #4
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has it wrong... its PSI
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Old 02-13-2006, 02:08 PM   #5
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Default synthetic

Synthetic is the way to go if you can afford the cost.
I personally never had an oil / engine related failure so I have decided to leave well enough alone.
Just too expensive to supply the 5 cars I maintain.
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Old 02-13-2006, 02:35 PM   #6
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Default Re: synthetic

Quote:
Originally Posted by SSEBONNE4EVA
Synthetic is the way to go if you can afford the cost.
I personally never had an oil / engine related failure so I have decided to leave well enough alone.
Just too expensive to supply the 5 cars I maintain.
that'* my rationale, couldn't afford to do a synth change every month. Spend enough on gas the way it is.
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Old 02-13-2006, 11:23 PM   #7
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I know KPA is silly, but thats what the guage reads. Sheesh, should be PSI!!
Also the temp guage reads celcius..

I feel better with the synthetic. After that catastrophic engine failure I had last year, I feel better with the synthetic. Plus, using AC Delco'* PF-47 filter also helps me, lol.
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Old 02-14-2006, 03:48 AM   #8
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Default Re: synthetic

Quote:
Originally Posted by sonoma_zr2
couldn't afford to do a synth change every month
How far do you drive a month? Synth has been known to go a lot more miles with normal driving. That'* the beauty of it, it lasts longer and protects better. It isn't really more expensive when you look at it that way.
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Old 02-16-2006, 12:05 AM   #9
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My friend went synthetic on a high mileage car and it started to make a light tapping sound. After going back to reg oil the tapping went away.
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Old 02-16-2006, 12:09 AM   #10
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Quote:
Originally Posted by pontiacGXP
My friend went synthetic on a high mileage car and it started to make a light tapping sound. After going back to reg oil the tapping went away.
Probably was a little thinner and therefore something started making noise. Sounds like the engine might have a bad lifter or something like that that should be fixed. It is widely known that running thicker oil will make noises go away so the dyno oil was probably a little thicker. My grandfather bought a '92 STS like 5 years ago with 130k on it. Had a minor rod knock. He started running straight 50 weight oil in it and 100k miles later it still runs strong. I don't think I would've done that but hey the thing still runs 100k later! Not to bad considering the car was less than $1k and was basically otherwise mint.

I ran synthetic in my Lumina when I had that, and when I changed it every 2700 miles or so it would still be clear. I love the stuff personally.

Shawn
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