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Switching to synthetic oil...

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive "P2" platform cars.

2001 - 2007 V70
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MDK
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Re: Switching to synthetic oil...

Post by MDK » Fri Aug 16, 2019 5:19 am

Hey all.. yeah. Synthetic is a good thing. Mainly get the right viscosity. What I've heard is that they do clean the internals. I've never had a brand new car.. ever so, the first thing I do is an oil change,, run it about a thousand miles and check. If it's dirty.. I dump it. I don't go by the mileage intervals.. never have. On my S60 R.. I kinda cheated. It was pretty neglected so I have changed the filter about every 500 miles until I was satisfied with the color I added the molylube. I'm considering doing the seafoam engine clean. In all these years I've never had an engine issue by doing this. I'll go a thousand miles.. check it .. 2 thousand check. I've never .. never waited 5/6 thousand miles before an oil change... That's just stupid.



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June
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Re: Switching to synthetic oil...

Post by June » Fri Aug 16, 2019 5:33 am

Being as you have bought a 15 year old car with 180K which has known service records of 6 month oil changes with non Synthetic oil it is not advisable to extend the oil change interval regardless of the type of oil used. Personally I would not switch the car's type of oil, but I would just keep it changed. June


My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned

Katten
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Re: Switching to synthetic oil...

Post by Katten » Fri Aug 16, 2019 6:12 am

Hehe aye, I have never even considered anything but synthetic oil for my modern cars. Thats why I was abit surprised regarding the topic. I run mineral/conventional oil in my old Beetle tho :).



Katten
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Re: Switching to synthetic oil...

Post by Katten » Fri Aug 16, 2019 6:18 am

Hm I missed the part that it had been serviced with mineral oil. I was so sure all oil that went in to cars like this always was synthetic haha sorry. I guess using mineral oil for a long time and then switching might cause some dirt buildup to loosen up? So maybe if you want to switch this procedure can be considered:

Dump all current oil.
Fill up with cheap synthetic of correct viscosity.
Drive a few weeks.
Dump it and change the filter.
Fill up with some quality stuff :).

Please if anyone have some suggestions against this please raise them. I'm no expert, just wanted to share some thoughts.



Mikele82
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Re: Switching to synthetic oil...

Post by Mikele82 » Fri Aug 16, 2019 12:22 pm

Well considering the joint answers.
I'm gonna go ahead with the IPD semi synthetic (after only Dyno oil for 15yrs)
hopefully the car would thank me rather then dump oil on me.
Will update on issues :)
ps
will change oil along with, oil filter, fuel filter, and trans drain/fill and the main PCV system replacement (made pdf for that one)
viewtopic.php?f=9&t=90704&p=515994#p515994



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