Oil question

[Highcountry2000]

Be careful!

Castrol did NOT recommend their 10w40 when they responded to my question to them. I will bet if you look, that viscosity has the "Energy Star" and says "Fuel Saving" on the bottle. Those are definite "No-Nos" on an oil container unless you have a new car with roller valve lifters.

Be careful, things that we have done for 20 years are not longer valid!

Good luck, Bruce

[Boondocks]

Castrol did NOT recommend their 10w40 when they responded to my question to them. I will bet if you look, that viscosity has the "Energy Star" and says "Fuel Saving" on the bottle. Those are definite "No-Nos" on an oil container unless you have a new car with roller valve lifters.

Be careful, things that we have done for 20 years are not longer valid!

Good luck, Bruce

10W40 oil (including Castrol) does not have an emblem marked "Energy Conserving" and does not contain the friction modifiers of the oil marked this way. "Energy Conserving" oil is usually 5W-30 or 10W-30, and the viscosity is never over 30 weight.

[mushman]

Mobil 1. Always ran the car 10-30 but now I use the bike specific 10-40. Running hard, hot, and long there's no substitue for the protection it offers.
Been using it in an 88 Pathfinder since 10K. Now have over 293K and never a hiccup or engine problem. Costs more. Always clean innards during maintenance.

mushman

[gshub]

oil

I run my GS1000s on castrol Gtx 15,40 the old gs has done about 80000 mls

[marvinsc]

Castrol 10W40. No Troubles at All, but it Appears that CHANGING the Oil on a Regular Basis is Way More Important that the Brand or Type!

[jm_foote]

Trying full synthetic. AMSOIL 10-40. It's JAMO certified I think. Seems to be running well so far. No shifting problems (caused by the oil, haha).

Also blended my own fork fluid with amsoil ATF fluid.

Gota agree with marvinsc about changing the oil.