This subject comes up fairly often as to what is best for the Z. A few years ago I posted that I had changed to Amsoil and there was the usual scepticism that results from a new product. I notice that a few other people are using it here these days, it is highly respected in the USA. Over the time I that I have puchased Amasoil products I have got to know the distributer for Victoria Bill Reid pretty well and trust him implicitly. Apart from his vast knowledge of oil , Bill owns a Z and knows the car pretty well. I started using Amsoil 0-30 in my Z a few months ago and there is a noticeable difference, the car is very smooth with a quicker turbo spool up. The lower viscosity also provides the ultimate in protection on cold start. However it is not for every car, if your engine is worn it will increase lifter noise and be unsuitable.This weekend I put it in my 180 which is producing insane power after some work at Z Shop. If you have an engine in good condition I highly recommend it, if you have any doubt ring Amsoil in Dandenong and ask for Bill. Tony
IMO 0w-anything is too low a viscosity. Have a look in the service manual. They recommend at least 10w40. And ultimate cold start up protection, ah, no. sorry not trying to have a go, but please visit http://300zx.co.uk/cgi-bin/manual.cgi for the online manual and look up recommended viscocities.
Finally someone's using a 0W oil. I've been on Mobil 1 10W30 and thinking of moving to 0W40. But a little afraid if it's too thin. My engine is in good condition, and by dyno results, I beat other NAs with more mods done to it. Thinking that the W30 viscosity helps the engine spins freely. So you've had no problem with 0W30 then?
Seriously, can you read??>> How much of what you just replied to, do you NOT understand.:?) :?)Mr Trickle is absolutely right, and so is NISSAN. 0W is just not a good idea:s :s
Greg D. from Specialty Z recommends 15W50 The owners manual also says 15W50 is the go for moderate climates. It says 10W30 or 10W40 is a good "all temperatures" oil.
Seriously, dunno what you mean?? Anyway, Dont really wanna use 0W oil anyway. Was just re-confirming of what THZX said, out of curiousity. OK, answer this then, should I be more concerned with the low temp viscosity or high temp? Low temp (startup) is when the most wear occurs, but high temp is the most time spent for the engine. I still like going a little on the thin side with the NA anyway. Sorry to annoy you
Thinner oils( lower viscosity) have a > greater tendency to drain down from the engine when standing(overnight etc.), so I would be more inclined to use a thicker(more viscous)oil. There is NO substitute for allowing your engine to warm-up, before deciding to "wring it's neck". A minute or two spent warming a stone cold engine, will pay big dividends further down the line, and will remove any worries about what the correct oil should be.Cheers mate
While we're on oils... What are people's thoughts on these "magnetic" oils. Has anyone used them? Are they worth giving a go?
I'm well aware ..>> Of what the manual recommends however it was made in 1989, the Amsoil distributor is an expert on oil and has used this oil over about 40k's in his Zed. This is a guy who is highly experienced and supplies to all forms of motor sport, he knows what he is talking about. Is is not for every engine, if you don't think it is a good idea don't use it. I'm very happy with the results in two engines Tony
Ive never tried it, but... ...Ive found it a funny thing to worry about. Oil not sticking to engine parts enough!?, that stuff sticks to everything and gets everywhere (just gotta look at my hilux's engine bay to see that ) On the other hand, oil loves to spread out, especially with gravity. So if that stuff can keep a little extra oil clinging to cylinder bores and bearings etc then that would be a good thing
