switch to detergent oil

[DLK]

I now have about 1000 miles on my rebuilt engine.  It has had 30w non-detergent oil since the rebuild.  I plan to switch to 10w30 detergent oil before putting it to bed for the winter.  I have searched the related topics but have not found the answer to a simple question.

 

How well do I have to flush the engine, filter canister etc. of the non-detergent oil?  Is there a problem if after the change there is a small amount of non-detergent mixed with the new oil?  Will they mix?

[captden29]

yes, they will mix just fine. if you are concerned about any residual non detergent left in the system, just change it, drive a little bit and then change it just before winter lay up. capt den

[Young Ed]

Just change it and don't worry.

[Dodgeb4ya]

^^^^ That's the right answer. Just change it.

[blucarsdn]

The following comments about detergent oil vs non-detergent oil is a little bit off topic, however, it provides food for thought.

There is so much hype cuirculating through the various car forums regarding the use of modern multi-grade oils in older cars, some of which claim that the lack of zink and other chemicals which reputedly effect emmission controls on new cars, will ruin the older engines.

I have never been a big fan of oil additives, I have used Castrol 20-50 GTX in the majority of my older engines for over twenty-five years, without a problem. I have recently switched to oils thar are designed for diesel engines, namely Valoline Blue, this is a multigrade 10/40 oil. I have used this oil in two diesel engines, a '95 Cummins 350 HP, 135k miles and a 2000 Ford 7.3 Power Sroke, 168K...

The Cummins is in my motor home, 38' pusher, the power stroke is in a F350 crew cab which I use to pull a 25' enclosed car trailer.. No problems to date.  Bill.

[Plymouthy Adams]

deja moo