lubricant compatible with diesel

Submitted: Thursday, Jul 07, 2011 at 14:17

ThreadID: 87428 Views:2027 Replies:8 FollowUps:6

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Tim Owen

Howdy - apologies if this is a dumb question. I am about to plumb in an aux fuel tank including a new fill point. I have the filler hose (Nitrile/PVC suction hose - looks like blue silicone) but getting the fittings into it is really tight - I want to use a bit of lubricant to help get them on - I guess a bit of whatever I use could end up in the diesel.

What is a suitable product? Can I just use a bit of vasoline?

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Reply By: Member - Roger T (SA) - Thursday, Jul 07, 2011 at 14:32

Thursday, Jul 07, 2011 at 14:32

hi tim, i think you are on the right track with petoleum gelly or you could use PBR rubber grease as used on brake rubber. if you put it on the fitting not hose it will help and the grease will be pushed away from the inside of the hose. hope this makes sense. as usual i know nothing.

AnswerID: 459359

Follow Up By: Member - Toyocrusa (NSW) - Thursday, Jul 07, 2011 at 20:08

Thursday, Jul 07, 2011 at 20:08

Hi Roger. I used rubber grease on petrol fuel injector "O" rings many years ago to make them easier to instal. The petrol turned the grease into a white powder which in turn blocked the filter baskets at the top of the injectors. This took about a week to occur. Have only ever used bearing grease since. Cheers,Bob.

FollowupID: 732954

Reply By: Member Al (Sunshine Coast) - Thursday, Jul 07, 2011 at 14:38

Thursday, Jul 07, 2011 at 14:38

Hi Tim, whatever you use should be soluble in diesel fuel to avoid the possibility of a small lump being sucked into the fuel line and injectors.

I would use a smear of engine oil on both surfaces. Any residue will dissolve in the diesel without problems.

Cheers
Allan

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AnswerID: 459361

Reply By: Member - Captain (WA) - Thursday, Jul 07, 2011 at 15:24

Thursday, Jul 07, 2011 at 15:24

Umm... diesel is actually a light grade oil, ever seen how slippery the floor is near a diesel pump?

Why not just smear some diesel on both ends of the fittings? No contamination issues at all :)

Cheers

Captain

AnswerID: 459364

Follow Up By: Member Al (Sunshine Coast) - Thursday, Jul 07, 2011 at 17:07

Thursday, Jul 07, 2011 at 17:07

Now why didn't I think of that Cap'n?

Cheers
Allan

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Reply By: get outmore - Thursday, Jul 07, 2011 at 15:28

Thursday, Jul 07, 2011 at 15:28

rpz or crc?

AnswerID: 459365

Reply By: gbc - Thursday, Jul 07, 2011 at 17:35

Thursday, Jul 07, 2011 at 17:35

two stroke oil

AnswerID: 459373

Reply By: olcoolone - Thursday, Jul 07, 2011 at 17:37

Thursday, Jul 07, 2011 at 17:37

Any stuff that's slippery, I think you would not use enough of something to cause an issue.

You could use the worst thing "soapy water" and get away with it.... if you used soapy water you might only use 20ml. and 20ml. (.020Lt.) in a 60lt. plus tank is not going to make any difference but if you used 1lt. that's a different story.

**DISCLAIMER**
And for the 25 people who are going to jump down my throat about even mentioning soapy water, I would not advise to us it, it was used an example. ROLF & LOL :)

AnswerID: 459375