Timing belt replacement 2007 v70, low mileage oil change interval Topic is solved

Bobhall · Post by **Bobhall** » 21 Jul 2018, 18:49

I wonder if I could ask another question, though not related. Retirement for me has lead to a sharp drop in my driving-now about 3000-4000 miles per year. So it takes 2.5 to 3 years to get to an oil change interval of 10000 miles. What should determine the frequency of oil changes-mileage or time? Throwing out synthetic oil every year with only 3-4000 miles on it seems silly.

Post by **oragex** » 21 Jul 2018, 19:11

If it's a good synthetic (Mobil 1, Castrol Edge) along with a good filter brand (Mann, Mahle, OEQ) I would be very fine with it changed every year which I actually do, or about 7000 miles. Even then, when the engine is clean inside and everything runs spot on, the oil doesn't even get dark in that interval.

If it was my car, I would not be worried to replace everything at 2 years interval and 7000 miles or so. Synthetic oil is just that, it doesn't degrade with just time - or much less so than a mineral.

On the other side, I'd make sure to give the car some action now and then - not necessarily redline, but certainly above 4000 rpm. This will have the oil circulate on different passages inside the VVT hub, along with actuating the VVT solenoids, etc. These engines do need to see some action on a regular basis.

You don't mention how many miles have on the engine, but if it's past 80k miles, I'd warmly recommend replacing the PCV system as of now. The PCV box gets brittle in time and fails inside, triggering a few unpleasant consequences. I'm on the opinion to replace it in the middle of the car's life, for peace of mind.

Same would go for the thermostat as well (a bit pricey but gets stuck open after 10 years)

Post by **abscate** » 22 Jul 2018, 04:31

Oh oh oh oh.....types rapidly....

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Post by **abscate** » 22 Jul 2018, 04:33

Bob..there is some discussion, and dark humor, under the thread I’ll search for link under

“ biggest cheapskate on Mvs?”

Post by **abscate** » 22 Jul 2018, 04:38

Bobhall wrote: ↑21 Jul 2018, 18:49 I wonder if I could ask another question, though not related. Retirement for me has lead to a sharp drop in my driving-now about 3000-4000 miles per year. So it takes 2.5 to 3 years to get to an oil change interval of 10000 miles. What should determine the frequency of oil changes-mileage or time? Throwing out synthetic oil every year with only 3-4000 miles on it seems silly.

Some discussion here

viewtopic.php?f=1&t=75054&hilit=Cheapskate

Basically, if you can get the car hot once a week, at least 20 minutes highway, you Can run oil on miles, otherwise You should use time and change once a year.

RickG · Post by **RickG** » 22 Jul 2018, 05:00

oragex wrote: ↑21 Jul 2018, 19:11 On the other side, I'd make sure to give the car some action now and then - not necessarily redline, but certainly above 4000 rpm. This will have the oil circulate on different passages inside the VVT hub, along with actuating the VVT solenoids, etc. These engines do need to see some action on a regular basis.

Intrigued by the 4000 rpm comment. Not certain I've ever brought the engine up to those RPMs on my car (same model '07 V70 2.5T 115K). Is this a proactive / preventative procedure, even on a daily driver?

Post by **abscate** » 22 Jul 2018, 05:59

You really do want to spin your motor up on occasion , it helps rotate the valves and keep them seated well.

I might do 5 minutes if 4000 rpm on the highway tin NJ because my T5 lives between2000-2500 for most of its life, even less now that I’m older.

Volvo valve train is very strong though, so the benefits of this are debatable

Post by **oragex** » 22 Jul 2018, 06:31

These are VVT engines, Variable valve timing (https://en.wikipedia.org/wiki/Variable_valve_timing). Near 3500 rpm when the valve opening timing changes, and the oil runs on different passages near the cam hub (my understanding).

Post by **abscate** » 22 Jul 2018, 07:59

I wonder if my conservative driving was why I am one of the few to have a CVVT failure?

Post by **Rattnalle** » 22 Jul 2018, 10:21

The intervals are always based on miles and a yearly interval, whichever comes first. Its not just about replacing the oil but also about getting water and dirt out of there. Oil is cheap enough not to go cheap there.

Taking an extra drive will still wear the car more than not driving. I wouldn't bother. Especially not if it's a trip you wouldn't do otherwise. But letting the engine rev a bit when entering a motorway or the like every now and then doesn't hurt. With the autos I find this isn't really an issue, mine very often goes to ~6000..

And sure it's not good to only drive short trips (there are bicycles..) but you have to weigh the cost of driving just to boil away moisture from the oil (we're taking trips of an hour and more here) against just changing the oil (yearly is still fine).

My car does 3/4 of it's yearly miles on trips more than an hour long, a lot of them in the five hour plus range. I don't worry about the condition of the oil between 7500 mi changes.

Timing belt replacement 2007 v70, low mileage oil change interval Topic is solved

2007 low mileage oil change interval