The Kizashi is sensitive to oil quality

Mon Jan 22, 2018 2:05 pm

That's awful thin stuff...not in the U.S. 5W30 here.

SamirD · Mon Jan 22, 2018 4:53 pm

We just passed 67k miles now and I've not used Auto-rx after finding some bad experiences in some quick google searches.

The Amsoil we're using is either 0-30 or 0-40, which is what I use on all my other cars too. The 0 weight does help at startup in most of my cars except the corvette which needs a thicker weight for sure.

Tom Kizzie · Mon Jan 22, 2018 8:40 pm

Ronzuki wrote:That's awful thin stuff...not in the U.S. 5W30 here.

checked again: recommended 0w20 but 5w30,10w30,10w40 also possible. for freezing during winter you rather stick with 0w20 or 5w30 i think. temperature range is bigger for those 2.

just watched de maintenance card in my car. they put Eurol 5w40 in 12000km back. I will do some research and maybe talk to the dealer to see if i go with 0w20 5w30 or 5w40. normally i use castrol 5w30 for swift sport (on sale) and our grand vitara also

Mon Jan 22, 2018 9:33 pm

I wouldn't use something as thin as 0W-20 unless the temperature was considerably into the negatives for F (-20C). 5W-30 is the recommended weight in most driving conditions for USDM Kizashis and it makes sense too. The Kizashi's J24B engine isn't one of those lean-burning direct injection engines. It's a rather old-school multiport injection engine. Hence, it's not as efficient as many newer rivals, but also doesn't have the oil-burning issue that you see with engines like from Subaru that use 0W-20 for maximum fuel efficiency. I think 5W-30 is a good fit for the J24B.
I'm keeping to the recommended weight and have been using full synthetics since I first changed the oil on the car. I used to use Pennzoil Platinum but have recently changed to Mobil 1 because I find PP harder to source than M1 for the places I typically shop.

SamirD wrote:We just passed 67k miles now and I've not used Auto-rx after finding some bad experiences in some quick google searches.

The Amsoil we're using is either 0-30 or 0-40, which is what I use on all my other cars too. The 0 weight does help at startup in most of my cars except the corvette which needs a thicker weight for sure.

I think Auto-RX is only justifiable for neglected engines running on conventional oil. If you've had the car for most of its life and been using synthetic motor oil, I don't think you need the Auto-RX treatment as you may not have much sludge in your engine. That being said, the treatment did quiet things down for my previous car but that was after 100,000+ miles on conventional oil by the previous owners.

SamirD · Tue Jan 23, 2018 6:54 am

We have had that noise from the engine since just after we got it, so I'm always still wondering what that is since it's definitely not right since our old Kizashi neighbor didn't have it on her car. Seafoam didn't help it, so I don't think it's any sludge, but it just really bugs me to hear all that racket when the car is cold.

My wife will have to leave the car parked during the day when she goes to work and it can get pretty cold as we've seen the outside temp guage in the negative before. Even in Alabama 0 weights worked well with Amsoil. I don't know how other synthetics would be though.

Tom Kizzie · Tue Jan 23, 2018 11:40 am

I read a lot yesterday and combined with own knowledge,experience,feeling i will try 0w20 next and let you all know. @work now so wont go deep into materie

Woodie · Tue Jan 23, 2018 1:03 pm

The 0 part is okay, but I don't think the 20 is enough for anything except deep winter.

Tom Kizzie · Tue Jan 23, 2018 3:50 pm

in my kizashi its to up same temperatures as 5w30,10w30,10w40. even a lot of "cartech" magazines and oil specialists write that 0w20 dont has to be thinner then the others when they are @ normal working temperature...

LPSISRL · Tue Jan 23, 2018 6:37 pm

If you're getting clackity-clack on startup, try changing the oil filter to a different brand. I think drain-back from check valves is an issue with some filters. Noisy startups with K&N, quiet ones with Bosch.

Tue Jan 23, 2018 7:27 pm

Tom Kizzie wrote:in my kizashi its to up same temperatures as 5w30,10w30,10w40. even a lot of "cartech" magazines and oil specialists write that 0w20 dont has to be thinner then the others when they are @ normal working temperature...

The different weights of oil will have a lot of range overlap, but where they differ is in the end of their range. 10W-40 is a thick motor oil for a modern gasoline engine and should be used in hot environments like deserts. 0W-20 is like the opposite on the scale and should really only be used in very cold environments for an engine like the Kizashi's. Is there a reason why you are so keen on using such a thin motor oil? Are the winter temps consistently way below freezing?