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Nissan L28 on Unleaded Fuels??
Nissan L28 on Unleaded Fuels??
I have a L28 MQ shortie and am wondering whether anyone has used or would recommend using unleaded fuel in these engines??
I run Super when I first bought the MQ (Sept 2003).
Then I went to unleaded and upper cylinder lubricant additive (lead replacement/valve seat protection stuff). It started to ping, and a timing adjustment fixed that. Then it started pinging a bit regardless of timing, and I've gone to PULP pretty much exclusively, without additive. Seems to be happy enough on that (for a noisy, tired, grumpy old engine).
Here's the evidence I used to convince myself ULP or even PULP was okay:
http://www.aip.com.au/health/lead_guide.htm
Then I went to unleaded and upper cylinder lubricant additive (lead replacement/valve seat protection stuff). It started to ping, and a timing adjustment fixed that. Then it started pinging a bit regardless of timing, and I've gone to PULP pretty much exclusively, without additive. Seems to be happy enough on that (for a noisy, tired, grumpy old engine).
Here's the evidence I used to convince myself ULP or even PULP was okay:
http://www.aip.com.au/health/lead_guide.htm
* Nothing is foolproof to a sufficiently talented fool *
Use PULP. ULP is too low octane for them but LRP is FAR FAR worse you'll foul your plugs in no time.
All L series nissans since 1973 were designed to be able to run on ULP (it was introduced in Japan about then). Most japanese engines (with the exclusion of a couple of australia only engines like later Toyo 18Rs or Pajero 2.6's when they'd been long ditched by japan) are in a similar boat.
I ran my L24 and L26 Zed engines on LPG with no modifications and I can guarantee they were tuned to twice the horsepower you're running but suffered no ill effects.
If you're really fussed about it run some upper cylinder lubricant in your fuel, or another lead substitute fuel additive - most petrol stations sell at least ione brand or buy it in bulk at supercheap or Kmart..
All L series nissans since 1973 were designed to be able to run on ULP (it was introduced in Japan about then). Most japanese engines (with the exclusion of a couple of australia only engines like later Toyo 18Rs or Pajero 2.6's when they'd been long ditched by japan) are in a similar boat.
I ran my L24 and L26 Zed engines on LPG with no modifications and I can guarantee they were tuned to twice the horsepower you're running but suffered no ill effects.
If you're really fussed about it run some upper cylinder lubricant in your fuel, or another lead substitute fuel additive - most petrol stations sell at least ione brand or buy it in bulk at supercheap or Kmart..
they run unleaded. LRP was never a fuel for this motor.
If running it on LRP successfully ur timing is out and u r paying too much fuel. Get your timing corrected and u will ping. So go back to unleaded the way it was ment to me.
screwy
If running it on LRP successfully ur timing is out and u r paying too much fuel. Get your timing corrected and u will ping. So go back to unleaded the way it was ment to me.
screwy
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