12,000 miles..Options-Change to GC now,or run Neutra first

[EJ]

Last week purchased a '03' Lexus is300 with the straight-line six and runs great..Very smooth,with power.This engine Lexus also used for years in some Toyota vehicles and has a good reputation and not a sludge producer.

Currently has 12,000 miles and from history record,oil was changed according to recommendation at 5,000 and 10,000 miles.The current second change (assume using Toyota oil/filter),having 2,000 miles on it, just started to turn a little off color..My plan was to go ahead now and change over to GC and also start the 3 oz. of RX maintenance dose,but not knowing how dirty the engine could get in 12,000 miles and having some Neutra,have two more options..Add 5 oz. Neutra,to current oil,drive 600 or so miles,then change oil/filter over to the GC with Auto-RX maint dose..Or,completely change oil to Pennzoil 10W-30 "dino",with the 5 oz. of Neutra,run 600 to 1,000 miles before change over to GC..Of the three options,what do you think? I want to take care of this engine,but not over-kill.. Thanks for the help

EJ

 

[sbc350gearhead]

Honestly, I don't think that any kind of flush is necessary. If you just want to add some solvency to the oil for cleaning purposes........LC is probably the most economical route.

 

[jthorner]

I agree with sbc, there should be no need for an engine flush considering the information you posted.

John

 

[GROUCHO MARX]

If you do the A-Rx, leave this oil in and just change the filter.

 

[Spector]

The one down side of RX is that it takes 3500 for the cycle to be completed. Unless you feel the engine is filthy, which I doubt, I would go the Neutra route and move on. I have used Neutra (full bottle, 12 ounces), for 500 miles, changed the oil and moved on. You could do a quick flush of cheap dino oil after the neutra for 10-20 miles to get everything out and then change over. Since you already have the Neutra not the LC I say go with it.

 

[salesrep]

Go the conservative route. Put 3-5oz of Neutra. in the crankcase . run 300-500 miles. Put the balance in the fuel tank which will help purge from the top and lubricate the upper cylinders as well.

 

[JohnBrowning]

I am with spector! A bottle of 131 for 500 miles change it and be done with it! If not for the 10,000 mile oil change interval on TOyota 5W30 I would not even bother to flush it!

I am going to do a 131 flush when I go over to M1R. I do not want the conventional oil in my sump to skew results of M1R testing.

 

[EJ]

John,

After posted,was now thinking along the same line as what you and Spector said,to add the Neutra to existing oil,drive 4-500 miles,then a flush to get everything out before change over to the GC.May even drive with the flush oil 500 or so miles before the change over..Over-kill?Probably,but I will know I'm starting fresh with the GC..Thanks all

EJ