hey guys this may seem like a stupid question. but i was on another forum some time ago i think it was automoticeforum.com in n e case i read that on a high milage engine syntetic oil was a bad idea as it will get into tiny tiny cracks in the engine that devolpe from air or soemthing like that. in n e case tho i want to try royal purple or castrol or some other type of syntetic oil however i am scared of what i read. will this be bad from my 2200? i have about 230000 kms or about 140000 miles on the car.
thanks
also what kind of advantages do syntetics have over regualar old quaker state or similar brand?
thanks again
Chris
On a higher mileage motor you SHOULD NOT switch to synthetic. It flows a lot better than bulk oil so it will find every little way out possible. Also since the bulk oil is thicker it will have created some sealing around parts that synthetic oil could knock loose causing big issues.
The advantages are there though....
1) Better lubrication
2) Better cooling properties in most cases
3) Better additives
4) Better gas mileage from reduced friction
5) Longer lasting
I use synthetic oil in my car and have since about the 1500 mile mark. I let it break in on bulk like it was meant to be then changed over. I change my oil every 4000-5500 miles now too.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
so what kinda problems could this present? how major?
thanks
Synthetic oil is better overall, i disagree about it lasting longer (3k miles of our cars is good enough) As for swapping, doesnt matter when, or weither or not you need to stick with it. You can use it on an older car, in fact ive got it running in my old 94 Sunbird with 150+k miles on it, and no issues at all.
ok so what happens if i put it in on my next change in oil in about 150 miles ish and it leaks all over the place can i drain it and pop some regular stuff back in no problem? or will i have problems as mentioned above right off the bat?
thanks again
You might get away with putting it in and have no leaks...but the majority of cases I've seen where people put synthetic oil that is not HIGHER MILEAGE oil have developed MAJOR oil leaks at the gaskets and seals. Some of them have turned terminal too. You MIGHT be able to switch back to bulk if it starts to leak and be ok but there's no guarantee to that.
Ender: It is a proven fact that synthetic lasts longer. Just because you still only run it for 3000 miles doesn't mean it doesn't last longer.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
well every one says do not use syn. oil on older cars or turbo jbodys ect... i personaly use it no leaks what so ever and its fine with the turbo too... granted i just hit 50,000kms on my car but we also use mobil 1 on our 1987 GNX and she doesnt leak at all either and thats a 19 year old car... but then it only has 24,000miles on it ...
The First Twin Charged jbody
blue car (R.I.P) - 240whp @7psi..
silver car - 305whp 315lbs.tq @15psi (91 Octane) or 420whp & 425lbs.TQ @20psi (94 octane+Alcohol Injection)
All dynos run on a Mustang dyno
I've NEVER seen or heard anyone say not to use synthetic on turbo Js, or ANY turbo car for that matter. It's not required but it will definately help.
I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26
alright then i think i'll just stick with plain ol' oil. any recomendations or does it really matter at all cheapest vs. quaker state? whats ur guys favorite regualar oil brand?
thanks again
Chris
I just had mine changed the other day and i went with a blend. I have 53,000 miles. Next oil change i wil go with full synthetic. I thought the small step way would negate any problems in changing over. I never heard anything about synthetic not working well on higher milage cars, i know a lot of new high performance cars come with synthetic now though. To each his own.
PSN ID: Phatchance249
Team Vision Racing (aka hypsy) wrote:I've NEVER seen or heard anyone say not to use synthetic on turbo Js, or ANY turbo car for that matter. It's not required but it will definately help.
then you havent been watching the oil chats in the boosted section.. many people claim its "bad" for turbos or not good as it will seep threw the seals.... and one guy even said "if normal syn oil is good for your turbo why did they make a syn. oil that says for turbos" which is the dumbest thing i have heard... apparently he has never heard of gimmics, just another way to sell more of the same oil
The First Twin Charged jbody
blue car (R.I.P) - 240whp @7psi..
silver car - 305whp 315lbs.tq @15psi (91 Octane) or 420whp & 425lbs.TQ @20psi (94 octane+Alcohol Injection)
All dynos run on a Mustang dyno
When i swapped from 10w30 Maxlife to Mobil i could tell a big difference, the motor felt lighter if you will, rev'd faster, and was cleaner.
I changed mine over at 50-53K i don't remember exactly when on my 99, and i am at 58,997 right now with no leaks or anything. Also sat over winter storage with mobil 1 and no problems at start up 6 mos later.
about leaks, no leaks since ive started using it (minus the normal cam carrier gaskets, and ruined PS pump cam gasket). It was driven like 6 times in the two months i went overseas with Mobil 1 in with no issues. I think there's some sort of huge myth about using Synthetic oil. Its better than normal oil, cost more obviously, and comes with high performance cars from the factory, should tell you something there.
Ender_Wiggin wrote:about leaks, no leaks since ive started using it (minus the normal cam carrier gaskets, and ruined PS pump cam gasket). It was driven like 6 times in the two months i went overseas with Mobil 1 in with no issues. I think there's some sort of huge myth about using Synthetic oil. Its better than normal oil, cost more obviously, and comes with high performance cars from the factory, should tell you something there.
Thats funny out of all the 2.4's I have has never had those leak on me.
I have run synthetic oil in all my J's. My 97 Z24 and 2001 z24 both from frist oil change. My first ever car 89 cavalier had 88k when I got it and I switched to synthetic about 110k. I switched when it was going through oil like crazy. It helped that car not go through it. I would agree that it could cause leaks on worn gaskets (that is if they are already worn). I have never seen this. Truly with 140k on the car now I would not change what you have been doing except do not use cheap ass oil. Use some high mileage oil.
FU Tuning
I switched my 2.4 over to synthetic somewhere around 70k miles....not for sure but seemed like my engine loved it. On my last change I've switched over to 10w30 synthetic cause I was a quart low when I came in and even after a change I would get the Oil warning light around hard left corners. Now that I'm on 10w that never happens but I may have lost a little zip though.
so if i was to do what was suggested above how well would a syntetic mix with another oil, im not to sure thats a good idea wouldn;t the finer synthetic particles seperate from the the rugular oil? just a thought im no chem whiz but yah would that work and would that help in transition? or would u still see much of the same problems if any problems at all?
thanks
chris
I switched my car over at 50k miles to sny oil. never misses a beat. but i do love know my motor is well protected by man made technology over dino oil which could break down at anytime during the 3k mile intervals. I orginally started off with mobile 1 5w30 now i switched to royal purple 10w30. lil added insurance to my motor for when add a lil power adder to my car.
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Synthetic doesn't cause leaks, it just points out leaks that were already there and that oil sludge and engien grime have plugged up, and the synthetic has cleaned up. So, switch at your own risk. Me, since about 3k miles i've been running Mobil 1 Tri-synthetic/supersyn.
Now, as for the "oil longevity" I've NEVER seen an oil break down after anything less than about 5000 miles. So, dino oil or techno lube it won't matter which one last longer--they all last long enough. But since none of us run our engines in a clean room and oil is not only a lubricant and a coolant, it's also the only cleaner for the inside of the engine--so changing the oil often is not about which will "last" longer, but how much grime you trust floating in your oil and how much you trust your oil filter...
So, on my mostly-stocker, for 90,000 miles (she's just past 93,000 now
), i've been runing Mobil full synthetic and K&N oil filters, and NO oil leaks whatsoever, and she still purrs
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121,500 and still beating every weekend. I mean driving nicely down the track. I used full synthetic since 60,000 miles. No problems at all.
PRND321 Till I DIE
Old Motor: 160whp & 152ft/lbs, 1/4 Mile 15.4 @88.2
M45 + LD9 + 4T40-E, GO GO GO
Ender_Wiggin wrote:When i swapped from 10w30 Maxlife to Mobil i could tell a big difference, the motor felt lighter if you will, rev'd faster, and was cleaner.
10w??? aint that hard on the engine running the thicker stuff like that? i thought 10 was for trucks and larger engines
Keeper of the Light wrote:Synthetic doesn't cause leaks, it just points out leaks that were already there and that oil sludge and engien grime have plugged up, and the synthetic has cleaned up. So, switch at your own risk. Me, since about 3k miles i've been running Mobil 1 Tri-synthetic/supersyn.
Now, as for the "oil longevity" I've NEVER seen an oil break down after anything less than about 5000 miles. So, dino oil or techno lube it won't matter which one last longer--they all last long enough. But since none of us run our engines in a clean room and oil is not only a lubricant and a coolant, it's also the only cleaner for the inside of the engine--so changing the oil often is not about which will "last" longer, but how much grime you trust floating in your oil and how much you trust your oil filter...
So, on my mostly-stocker, for 90,000 miles (she's just past 93,000 now ), i've been runing Mobil full synthetic and K&N oil filters, and NO oil leaks whatsoever, and she still purrs
That my friends is the truth. If your car leaks/burns oil after going to synthetic then it means it was time for a rebuild anyway. I'm not sure where the 3,000 mile oil changes came from considering I had a 1982 Toyota Celica that had 16,000km/10,000 mile oil change intervals, and yes I'm looking at the manual right now and not just making it up. Seems funny they sell oil formulated for 5,000 miles or whatever, when back in 1982 oil was good for 10,000 miles.
