Traded Dynalube D5315 for a Mahle OX 149 D (filter change only)

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Noticed that the 06 Volvo V70R (with 262.9K miles) was dripping oil, so decided to investigate. Turns out that oil filter housing (cartridge filter type) was leaking slightly. That’s not so unusual if the O-ring is not changed out with each oil change. However, this one was changed last oil change, so may have been a defective O-ring or something else. In any event, what was in there was a Dynalube D5315 filter (a Rock Auto Wholesale closeout listed as an Ultra Power). Got a couple of those awhile back out of curiousity along with a few Carquest 84021 that were likewise a RA Wholesale closeout under the Ultra Power brand. I like the Carquest filters much better, by the way...made in Poland, very nicely assembled. Dynalube (made in China) was not a terrible filter, but i was suspicious that it might be a bit restrictive for cold starts and cold conditions, especially since car has 10W-30 Pennzoil Platinum in there right now. In a normal year the oil would get changed 4X per year and there would be either 0W-40 or 5W-30 Synthetic in there for the cold season along with a Mahle filter. So i was planning to change the filter anyway.

So it looks like the Dynalube was a bit restrictive given how squirmed the pleats look. Have seen filter pleat squirming before with restrictive filters run during cold weather. Installed the new Mahle filter along with about 8 oz of 0W-20 Pennzoil Platinum to slightly reduce the viscosity of the other 5 qts of 10W-30 in there. The Volvo will be much happier with the Mahle filter in there (OEM filter for this Volvo). Could the extra pressure in the filter housing due to the more restrictive Dynalube filter media have exacerbated the o-ring leak?

Old Dynalube on left (out), New Mahle in the filter housing on right going in...and the rust free underside of the Volvo....enjoy the pics.
 

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ZeeOSix

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Could the extra pressure in the filter housing due to the more restrictive Dynalube filter media have exacerbated the o-ring leak?

The filter flow restriction has nothing to do with the maximum oil prrssure in the system. The max oil pressure is controlled by the oil pump pressure relief valve, and all seals in the system should be able to take max pressure. Maybe your pressure regulator is going haywire since it has so many miles - ?
 

VolvoZ

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The filter flow restriction has nothing to do with the maximum oil prrssure in the system. The max oil pressure is controlled by the oil pump pressure relief valve, and all seals in the system should be able to take max pressure. Maybe your pressure regulator is going haywire since it has so many miles - ?
Thx. Pressure regulator in my low mileage Volvo;) is perfectly fine. May have been bad O-ring. Also forgot to mention that there may have been a cat hair on the O-ring on the filter cartridge housing (darn cats). Who said anything about hitting the max oil pressure? It’s just a small leak, coating the underbelly cover and maybe 2 drips on the floor over a day or two.

Will report back on the leak (or lack thereof) in a few weeks. Then sometime much later this year with pics of the Mahle filter. Going to run the newly installed Mahle for the 2K left on the oil that’s in there now, then do a D&F later this year. With the much reduced driving going on lately, this may take a while.
 

ZeeOSix

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Who said anything about hitting the max oil pressure?
What I'm saying is if it's going to leak it's going to be more likely to do so when the max oil pressure is present in the system. And that max pressure is controlled by the oil pump, so if the pump pressure regulalator is not functionung correctly then it could be over pressurizing the system when cold started. But chances are it was a bad O-ring seal. Time will tell now that you've rectified any possible bad O-ring issues.
 
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