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Oil leak in c70

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

pink_noise_chick
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Oil leak in c70

Post by pink_noise_chick » Sun Jun 16, 2013 1:22 am

I got a 2000 c70 given to me under a year ago, and it ran fine for about a month. We experienced the ever-infamous dead battery, replaced that, and it ran fine for another three months or so. On approximately a twice-monthly basis (on the weekend of payday) we would drive 70 miles to visit family. About four months after we acquired the car, about 60 miles into our usual trip, we experienced some heating of the engine that we had not seen before. We pulled over, let the car cool, and carefully drove it the rest of the way. After dinner with my parents, I went out to the car to check the oil, and found an oil leak that I can only describe as catastrophic. It was empty, easily four quarts flowing down my parents driveway, and my poor Volvo out of commission. Until very recently, I was under the impression that the car was unfixable, but have recently decided that I should do it the justice of attempting. I would appreciate any advice on how to proceed. I am planning to go and wash the engine tomorrow in an effort to locate the leak and take stock of damages, and I would be much obliged to anyone with tips on how to proceed once that is done.

Thank you.



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Re: Oil leak in c70

Post by precopster » Sun Jun 16, 2013 2:12 am

That DOES sound like a large leak. Check the sump where the oil cooler is mounted. This could be a source. A more simple explanation could simply be the oil filter housing has loosened. You could have a nasty hole in the sump. Front crank seals rarely leak. Front or rear cam seals can be leaking. The rear crankshaft seal can let go and because of its size can leak profusely.

After you clean the engine and refill with oil and restart the engine you should be able to see the source. Once you establish this post up what you find. The PCV system can block and cause seals to fail. As this is the most likely cause it would be best to replace this system while the car is being repaired.

A symptom of a blocked PCV is pressure coming out of the dipstick hole while the engine is running and warmed up.
Last edited by precopster on Sun Jun 16, 2013 7:08 am, edited 1 time in total.


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Re: Oil leak in c70

Post by abscate » Sun Jun 16, 2013 5:19 am

Get underneath , take off the plastic cover under the engine, and check the drain plug and the oil filter area..they might just have gotten loose and splurged your oil out. Back on the road for under 10 USD in this case.


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Re: Oil leak in c70

Post by wheelsup » Sun Jun 16, 2013 7:11 am

A blown seal won't flow that much oil unless it's simply not there anymore I wouldn't think.


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Re: Oil leak in c70

Post by jblackburn » Sun Jun 16, 2013 8:15 am

wheelsup wrote:A blown seal won't flow that much oil unless it's simply not there anymore I wouldn't think.
It will. I dumped 2 qts of oil in about 2 miles.


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Re: Oil leak in c70

Post by wheelsup » Sun Jun 16, 2013 8:56 am

jblackburn wrote:
wheelsup wrote:A blown seal won't flow that much oil unless it's simply not there anymore I wouldn't think.
It will. I dumped 2 qts of oil in about 2 miles.
Holy heck when I installed my RMS incorrectly it was dumping oil but not at that level.


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Re: Oil leak in c70

Post by pink_noise_chick » Sun Jun 16, 2013 10:44 am

Thanks for the pointers, guys. I haven't had a chance to get under it yet, that'll hopefully be happening very soon. I'll post photos when I do.



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Re: Oil leak in c70

Post by jimmy57 » Sun Jun 16, 2013 1:05 pm

Did the gauge indicate hot or were you gauging it hot by an odor?



pink_noise_chick
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Re: Oil leak in c70

Post by pink_noise_chick » Sun Jun 16, 2013 2:16 pm

jimmy57 wrote:Did the gauge indicate hot or were you gauging it hot by an odor?
I (from the passenger seat) noticed an odor, at which point I asked my husband to check the gauge. He saw a slight increase from normal, but not something that, without the smell, would have alarmed us.



pink_noise_chick
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Re: Oil leak in c70

Post by pink_noise_chick » Sun Jun 16, 2013 2:20 pm

I've been out there, cleaned it up, and looked it over. So far, I've not been able to get a decent photo. Looking from the front end of the car, the leak is coming from somewhere under a vertical plastic cover to the left of the engine. As the battery is dead, I wasn't able to check what the running pressure was like, but the battery is charging now.



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