Synthenic Oil
- Thread starter Guled22
- Start date
when i got my 98 with 69xxx on it, it had conventional valvoline in it. i changed it to Mobil 1 at 70k even and there was a night and day difference in how it ran. alot of people say you cant switch back to conv. after using synthetic, but i dont know about all that. also some people say to not use synthetic until the motor is fully broken in, otherwise the valve seals wont seat correctly. again i dont know about all that.
YardSpecial
New Member
Never, ever too late to switch.
I proved it on my HIGH mileage, used cars.
All my rides have syn, the 89 302 has 200K on it when I switched !!!
I proved it on my HIGH mileage, used cars.
All my rides have syn, the 89 302 has 200K on it when I switched !!!
twogts4us
15 Year Member
Guled22 said:
OK, I'm really not trying to be a smarta$$, poke fun at ya or flame ya, but it IS a Ford, after all...
Seriously, I've heard of some people 'injecting' grease in their ball joints (since they do not have grease fittings) with a syringe. Other possible squeakie places are the rear sway bar mounts, shock mounts, etc. Hopefully some others can jump in here and offer the source of mysterious squeaks that they have fixed. It can be a challenge to hunt them down and fix them all. Again, I wasn't trying to pi$$ you off, but your question kinda made me chuckle...
Best of Luck!
FallenPhoenix
New Member
sometimes synthetic can cause leaks that weren't apparent with conventional oil to begin leaking with synthetic. The reason is the actual molecules of oil in synthetic are smaller than in conventional oil. Kind of like when you take blood thinners and get a cut, it bleeds a lot more than with regular blood/oil.
YardSpecial
New Member
This is straight from Mobil 1's webpage.
Myth: Mobil 1 will leak out of the seals of older cars.
Reality: Mobil 1 does not cause leaks. In fact, new Mobil 1 with SuperSyn™ was tested in dozens of industry standard and OEM tests to prove its seal performance. It is fully compatible with the elastomeric materials from which all automotive seals and gaskets are made.
ExxonMobil engineers are wary of conventional oils that tout their use of additional seal-swelling agents. With extended use, these agents can over-soften engine seals, resulting in leaks. More to the point, an oil additive will not rejuvenate worn or damaged seals. The damaged seal may have been caused by a worn rotating metal component in the engine.
If an older engine is in good condition and does not have oil leaks, Mobil 1 with SuperSyn™ provides the same advantages as when used in a new engine. ExxonMobil recommends taking measures to repair the leaks, then using Mobil 1 with SuperSyn™. ExxonMobil also always recommends following the automobile manufacturer's manual for the proper oil to use.
Myth: Mobil 1 will leak out of the seals of older cars.
Reality: Mobil 1 does not cause leaks. In fact, new Mobil 1 with SuperSyn™ was tested in dozens of industry standard and OEM tests to prove its seal performance. It is fully compatible with the elastomeric materials from which all automotive seals and gaskets are made.
ExxonMobil engineers are wary of conventional oils that tout their use of additional seal-swelling agents. With extended use, these agents can over-soften engine seals, resulting in leaks. More to the point, an oil additive will not rejuvenate worn or damaged seals. The damaged seal may have been caused by a worn rotating metal component in the engine.
If an older engine is in good condition and does not have oil leaks, Mobil 1 with SuperSyn™ provides the same advantages as when used in a new engine. ExxonMobil recommends taking measures to repair the leaks, then using Mobil 1 with SuperSyn™. ExxonMobil also always recommends following the automobile manufacturer's manual for the proper oil to use.
oil & squeaks
Sorry but used that syn stuff years ago and I got leaks, I have not and will not ever use it again....I have all kinds of cars with some over 160,000 and more all on reg oil.....I just change it often....filters too! on the squeeks I have had use the needle to inject grease into the non-grease fittings....I spray white lube on the ,bushings , coil springs,parking break, hood & door latches and all other links that move.....about every six months.... besides keeping it quiet it helps with rust........try it ! it works................Johnnyboy
Sorry but used that syn stuff years ago and I got leaks, I have not and will not ever use it again....I have all kinds of cars with some over 160,000 and more all on reg oil.....I just change it often....filters too! on the squeeks I have had use the needle to inject grease into the non-grease fittings....I spray white lube on the ,bushings , coil springs,parking break, hood & door latches and all other links that move.....about every six months.... besides keeping it quiet it helps with rust........try it ! it works................Johnnyboy
YardSpecial
New Member
Well sounds like a MAINTENCE issue and not the oil.
This is the type of BS I am talking about !!
This is the type of BS I am talking about !!
johnnyboy1111 im not doubting that you had leaks after switching to synthetic, however you probably had leaks prior to switching and you didnt know you had them. most synthetics are far better than dino oils are cleaning out the motor of sludge. when you clean the sludge away you pinpoint leaks in the gasket. so by running the dino oil you were mearly hiding leaks that were already there. i switched my 81 5.0 to mobil 1 10w30 when it had 146k miles and yes i had a valve cover gasket leak, but it was already there before i switched. i replaced the gaskets and the car runs better with mobil 1 than it ever ran even when it was new (according to my mom).
YardSpecial
New Member
You have it HALF right.
I have NO sludge in any of my cars, so what you said does not hold water.
People that have sludge in the engine give too sheets what oil they use and would NEVER buy Syn oil !!
Sick of hearing how syn cleans sludge, dino oil cleans sludge also !
POOR maintence, short trips, over cooling, not changeing the oil cause sludge, has nothing to do with what oil is in the crankcase. (yes some oils sludge faster then others)
Please get your facts straight before you post BS myths.
I have NO sludge in any of my cars, so what you said does not hold water.
People that have sludge in the engine give too sheets what oil they use and would NEVER buy Syn oil !!
Sick of hearing how syn cleans sludge, dino oil cleans sludge also !
POOR maintence, short trips, over cooling, not changeing the oil cause sludge, has nothing to do with what oil is in the crankcase. (yes some oils sludge faster then others)
Please get your facts straight before you post BS myths.
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