Oil choice!
Instructor
Joined: Jan 2016
Posts: 1,193
Likes: 416
From: IL
Well, In my Mazda 6, obviously here it is specified for 0w20, but everywhere else in the world, anywhere up to 10W50 is perfectly OK to use. There isn't an engine in the world which will cause you issues running 5W40 oil. Manufacturers would need to design impossibly thin engine clearances in that case.
I use 5W40 year round here in Canada but I park in a garage. 0w20 would be helpful if you park outside in -20f, but if you are garage stored, 5W30/40 is perfectly OK to use even in the coldest of winters, as I have been doing for many years.
I use 5W40 year round here in Canada but I park in a garage. 0w20 would be helpful if you park outside in -20f, but if you are garage stored, 5W30/40 is perfectly OK to use even in the coldest of winters, as I have been doing for many years.
Jaguar / Landrover originally recommended 5w20 for their 5L V8 when it came out around 2010. A few years later that recommendation changed to 0w20 (and continues today, worldwide), due to engine damage on start up (timing chain, guides, and tensioners).
Very small oil passages. 5w40 would destroy that engine in no time.
Lead Lap
Joined: Dec 2019
Posts: 630
Likes: 72
From: Ontario
I think you need to be very careful and do research before going against current manufacturer oil recommendations.
Jaguar / Landrover originally recommended 5w20 for their 5L V8 when it came out around 2010. A few years later that recommendation changed to 0w20 (and continues today, worldwide), due to engine damage on start up (timing chain, guides, and tensioners).
Very small oil passages. 5w40 would destroy that engine in no time.
Jaguar / Landrover originally recommended 5w20 for their 5L V8 when it came out around 2010. A few years later that recommendation changed to 0w20 (and continues today, worldwide), due to engine damage on start up (timing chain, guides, and tensioners).
Very small oil passages. 5w40 would destroy that engine in no time.
Like i've mentioned before, 5w40 isn't a thick oil, and the passages on these engines are nowehere near as thin as you think. I've been doing this for long enough (using even thicker than 5w40 at times, with a number of different vehicles)
Complete nonsense. That recommendation only changes because CAFE mandated this change by offering generous tax rebates which no manufacturer would possibly refuse.
Like i've mentioned before, 5w40 isn't a thick oil, and the passages on these engines are nowehere near as thin as you think. I've been doing this for long enough (using even thicker than 5w40 at times, with a number of different vehicles)
Like i've mentioned before, 5w40 isn't a thick oil, and the passages on these engines are nowehere near as thin as you think. I've been doing this for long enough (using even thicker than 5w40 at times, with a number of different vehicles)
Off topic but I'm loving the new PPE headers and Ark Exhaust system! Drone is gradually saying bye bye and turning into a mean growl.
Lead Lap
Joined: Dec 2019
Posts: 630
Likes: 72
From: Ontario
I am hoping you got an ECU tune which corresponds with your headers.. But assuming you probably didn't. Which is bad for a whole host of reasons.
Enjoy your boring NX300.
Lead Lap
Joined: Dec 2019
Posts: 630
Likes: 72
From: Ontario
Lead Lap
Joined: Dec 2019
Posts: 630
Likes: 72
From: Ontario
The NX300 isn't my daily driver, it's one of the many family cars...
No, you sound pretty stupid. My boring NX300 has nothing to do with the fact that you should never go catless without getting an ECU tune. The ecu is going to be confused, your air fuel ratios are WAY off, and you'll only be making about half the level of power you can be if you get a tune so that the ECU is no longer confused.
The NX300 isn't my daily driver, it's one of the many family cars...
The NX300 isn't my daily driver, it's one of the many family cars...
Planning on putting 5w40 on a 0w20 recommended vehicle is far the top most stupid idea I ever heard. I'm very sorry for your boring NX300.
Last edited by s3v3n; Dec 17, 2019 at 08:22 AM. Reason: moving on.... done dealing with another idiot
Racer
Joined: Aug 2018
Posts: 1,936
Likes: 825
I'm considering switching to a thicker oil, maybe 5w-30? Got the new RR BBK and under hard deceleration, the oil in the oilpan sloshes foward, letting the oil pickup gasp a gulp of air for less then a second, giving me a low oil pressure warning for maybe .5 of a second. Hoping the thicker oil reduces slosh.
Lead Lap
Joined: Dec 2019
Posts: 630
Likes: 72
From: Ontario
I'm considering switching to a thicker oil, maybe 5w-30? Got the new RR BBK and under hard deceleration, the oil in the oilpan sloshes foward, letting the oil pickup gasp a gulp of air for less then a second, giving me a low oil pressure warning for maybe .5 of a second. Hoping the thicker oil reduces slosh.
Pit Crew
Joined: Feb 2019
Posts: 244
Likes: 78
From: New Jersey
Air fuel ratio is measured by O2 sensor 1, which is pre-cat. The only thing the car will know is that there is poor catalyst efficiency.
Pit Crew
Joined: Oct 2015
Posts: 143
Likes: 27
From: SHJ, UAE
